benchmarking water loss: the death of unaccounted for …nysawwa.org/docs/pdfs/11b -...
TRANSCRIPT
Quiz
According to the AWWA M36 Water Audit Method, an acceptable level of Unaccounted For Water is:
A.15%B. 10%C. 5%D.0%
3
6
7
Landscape of Varying Levels of Water Loss Management Policy
Rolling Average
Monthly, Unadjusted
10 MGD = $1.6 M / yr
AWWA Free
Water Audit
Software
Version 5.0
(2014)
AWWA Manual of Practice
M36 Water Audits &
Loss Control Programs
(2015)
MAIN MENU
©2014 Water Research Foundation. ALL RIGHTS RESERVED.11/17/2014
Comparison of your utility's mains and service line failure frequencies against
industry averages and targets
Summary of the water audit performance indicators and the results of the Real
Losses Component Analysis
Use this sheet to evaluate if pressure management and a reduction in average
system pressure provides an opportunity to reduce real losses cost effectively
Use this sheet to establish a preliminary schedule for proactive leak detection
surveys
Use this sheet to evaluate if a reduction in location and repair times for reported
and unreported leaks would provide an opportunity to reduce real losses
A chart summarizing the results in the Real Loss Component Analysis
Carry out a Real Losses Component Analysis using this sheet
Select your desired water loss performance indicator to be displayed in
comparison to a North American water utility data set
Enter the required data from the AWWA WLCC Free Water Audit Software:
Reporting Sheet to populate the Water Audit
WaterRF 4372: Real Loss Component Analysis: A Tool for Economic Water Loss Control
Glossary of all terms used in the WaterRF 4372 Component Analysis Model
License
Macros must be enabled to properly use the WaterRF 4372 Component Analysis Modeling Software
Enter the audit period and select reporting units
Complete set of instuctions for the WaterRF Component Analysis Modeling
Software
Start Page
AWWA Water Balance
Performance Indicators
Real Loss Components
Failure Frequency
A-L-R Times
Economic Intervention
Pressure Management
License
Summary
RL Components Chart
Glossary
Instructions
WRF
Leakage Component
Analysis Model
(2014)
RealLosses
ApparentLosses
UnbilledAuthorized
Consumption
BilledAuthorized
Consumption
Non-Revenue
Water
RevenueWater
Leakage & Overflows at Storage
Billed Unmetered Consumption
Billed Metered Consumption
Billed Water Exported
Leakage on Service Lines
Leakage on Mains
Systematic Data Handling Errors
Customer Metering Inaccuracies
Unauthorized Consumption
Unbilled Unmetered Consumption
Unbilled Metered Consumption
WaterImported
OwnSources
TotalSystemInput
( allowfor
knownerrors )
WaterLosses
AuthorizedConsumption
WaterExported
WaterSupplied
IWA/AWWA Standard Water Balance
QUIZ
QUIZBilled
Authorized
Consumption
Unbilled
Authorized
Consumption
Apparent
Losses
Real
Losses
Fire Dept. flushing
Under-registered customer
meters
Pipe joint leakage
Water theft
Customer billing adjustment
DOT metered usage
AMR reading device failure
Customer toilet leak
Water main break
Storage tank overflows
15
0
5
10
15
20
25
30
35
MG
DWater Loss as a Percentage of Supply is not an Indicator of Performance
Water Supplied (MGD)Authorized Consumption (MGD)Water Loss (MGD)
Major Industry
16
10%
12%
14%
16%
18%
20%
22%
24%
26%
0
5
10
15
20
25
30
35
MG
DWater Loss as a Percentage of Supply is not an Indicator of Performance
Water Supplied (MGD)Authorized Consumption (MGD)Water Loss (MGD)Water Loss (Percent of Supply)
Major Industry
17
10%
12%
14%
16%
18%
20%
22%
24%
26%
0
5
10
15
20
25
30
35
MG
DWater Loss as a Percentage of Supply is not an Indicator of Performance
Water Supplied (MGD) Authorized Consumption (MGD)Water Loss (MGD) Water Loss (Percent of Supply)
Major Industry
18
0
5
10
15
20
25
30
35
40
45
50
MG
DWater Loss as a Percentage of Supply is not an Indicator of Performance
Water Supplied (MGD)
Authorized Consumption (MGD)
Water Loss (MGD)
Development BoomGreat Recession,
Rate Increases,
Conservation
New Normal
19
10%
12%
14%
16%
18%
20%
22%
24%
26%
28%
0
5
10
15
20
25
30
35
40
45
50
MG
DWater Loss as a Percentage of Supply is not an Indicator of Performance
Water Supplied (MGD)
Authorized Consumption (MGD)
Water Loss (MGD)
Water Loss (Percent of Supply)
20
Quiz
According to the AWWA M36 Water Audit Method, an acceptable level of Unaccounted For Water is:
A.15%B. 10%C. 5%D.0%
According to the AWWA M36 Water Audit Method, an acceptable level of Unaccounted For Water is:
A.15%B. 10%C. 5%D.0%
Quiz
23
Unaccounted
For Water
Unaccounted
For Water
Percentage
24
2003
Inconsistent use and
interpretation
Unreliable indicator of
performance
Fails to segregate loss into
its components for effective
management
Simplicity
Everything should be made as simple as possible, but no simpler.
-Albert Einstein
For every complex problem, there is a solution which is simple, neat, and wrong.
-H.L. Mencken
Unaccounted-For No More
3-V
Validity
Value
Volume
MG per Year
Gal/connection/day
Leakage Index
$ per Year
Economic Loss Index
Water Audit Data Validity Score
95% Confidence Limits
Key Data Input Grades
10,097
2,824
Total Non-Revenue WaterVolume (MG)
Level 1
Billed Consumption
NRW
Data Validity Score: 75 out of 100
$2,341,420
per year
Volume Value
Real Loss
Apparent Loss
Unbilled Consumption
-
500
1,000
1,500
2,000
2,500
NRW Components - By Volume (MG) - Level 2
Real Loss
Apparent Loss
Unbilled Consumption
$-
$200,000
$400,000
$600,000
$800,000
$1,000,000
$1,200,000
$1,400,000
$1,600,000
$1,800,000
NRW Components - By ValueLevel 2
Volume Value
Unbilled Unmetered
Unbilled Metered
Meter Inaccuracy
TheftBilling ErrorsUnreported
Leakage
Background Leakage
Reported Leakage
0
500
1000
1500
2000
2500
Real Loss Apparent Loss UnbilledConsumption
NRW Components - By Volume (MG)
Level 3
Unbilled Unmetered
Unbilled Metered
Meter Inaccuracy
Theft
Billing Errors
Unreported Leakage
Background Leakage
Reported Leakage
$0
$200,000
$400,000
$600,000
$800,000
$1,000,000
$1,200,000
$1,400,000
$1,600,000
$1,800,000
Real Loss ApparentLoss
UnbilledConsumption
NRW Components - By ValueLevel 3
Volume Value
Current2,824
Economic Target1,146
0
500
1000
1500
2000
2500
3000
NRW Volume (MG/year)
Current$2,341,420
Economic Target
$839,130
$0
$500,000
$1,000,000
$1,500,000
$2,000,000
$2,500,000
NRW Value ($/year)
AnalysisDiscovery RecommendationInvestigation
AUDITPROGRAM
DESIGN
SUPPLY METERING
LEAK
DETECTION &
REPAIR
PRESSURE
MANAGEMENT
DISTRICT
METERED
AREAS (DMAs)
CONSUMPTION
AnalysisDiscovery RecommendationInvestigation
AUDITPROGRAM
DESIGN
Team Structure
Organizational & Staff Capacity
Benchmarking & Reporting
Ongoing Validation
Calculations
Validation
Long Term Improvements for
Data Validity, Real Loss Control and
Apparent Loss Control
Essential Components for Success
Water Loss Control Team
•Distribution
•Metering
•Billing
•Finance
•Customer Service
•Fire Department
•Parks & Rec
•Engineering
•Executive
•Multi-departmental
•Cross-functional
•Essential for
establishing a culture
of efficiency
Monthly Tracking vs Annual Audit
Monthly AnnualVolume from Own Sources Data Validity Score
Water Imported Master Meter Error Adjustment
Water Exported Customer Meter Inaccuracy
Billed Metered Use Systematic Data Handling Errors
Billed Unmetered Use Length of Mains
Unbilled Metered Use Number of Connections
Unbilled Unmetered Use Annual Operating Cost
Customer Retail Rate
Variable Production Cost
AnalysisDiscovery RecommendationInvestigation
Program Initiative FY 11-12 FY 12-13 FY 13-14 FY 14-15 FY 15-16Program Support & Benchmarking
accounting & KPI tracking
team meetings & support
assignments & accountability
annual water audit/report
communications - board, JWA
Process Enhancements for Billing & Meteringaccounts field inventory
ongoing highest revenue account analysis
Finished Water Meter Testinginstallation of test ports
pilot insertion-type test
ongoing insertion-type test
periodic in-house test - ultrasonic/drawdown
Large Meter Testing & Repair (≥3")pilot testing - 50 meters
equipment acquisition & training
ongoing testing & repair - 500 meters
AMR conversion for Non-Residential Meters4" and larger (approx 110)
3" (approx 171)
2" (approx 790)
Leakage Managementpilot DMAs: Forsyth, Hartley, Breezy Hill
pilot leak survey: Forsyth, Hartley, Breezy Hill
leak detection equipment acquisition
ongoing DMA management
ongoing active leak detection
Pressure Management Investigation
Right Sizing for Select Customer Meterspilot analysis - 20 meters (≥2")
follow-on analysis - 350 meters (≤1.5")
meter replacements, where justified
annual review of customer accounts for right-sizing
Small Meter Testing & Replacement (≤2")pilot testing - 500 meters
performance curve analysis
ongoing testing & replacement
AnalysisDiscovery RecommendationInvestigation
$-
$100,000
$200,000
$300,000
$400,000
$500,000
$600,000
$700,000
$800,000
$900,000
$1,000,000
FY 11-12 FY 12-13 FY 13-14 FY 14-15 FY 15-16
OPERATIONS
CAPITAL
TOTAL
AnalysisDiscovery RecommendationInvestigation
AnalysisDiscovery RecommendationInvestigation
Trailing Twelve Months
Monthly Unadjusted
Investing in your Future:
Sustainable Water Infrastructure
Financing
Take Aways:
1. Reducing NRW = Cash
2. Supply Side Conservation = Capacity
3. Value of Water in US is Tipping to Efficiency
M. Steve Cavanaugh, Jr., P.E.
BREAK
AWWA Free
Water Audit
Software
Version 5.0
(2014)
AWWA Manual of Practice
M36 Water Audits &
Loss Control Programs
(2015)
MAIN MENU
©2014 Water Research Foundation. ALL RIGHTS RESERVED.11/17/2014
Comparison of your utility's mains and service line failure frequencies against
industry averages and targets
Summary of the water audit performance indicators and the results of the Real
Losses Component Analysis
Use this sheet to evaluate if pressure management and a reduction in average
system pressure provides an opportunity to reduce real losses cost effectively
Use this sheet to establish a preliminary schedule for proactive leak detection
surveys
Use this sheet to evaluate if a reduction in location and repair times for reported
and unreported leaks would provide an opportunity to reduce real losses
A chart summarizing the results in the Real Loss Component Analysis
Carry out a Real Losses Component Analysis using this sheet
Select your desired water loss performance indicator to be displayed in
comparison to a North American water utility data set
Enter the required data from the AWWA WLCC Free Water Audit Software:
Reporting Sheet to populate the Water Audit
WaterRF 4372: Real Loss Component Analysis: A Tool for Economic Water Loss Control
Glossary of all terms used in the WaterRF 4372 Component Analysis Model
License
Macros must be enabled to properly use the WaterRF 4372 Component Analysis Modeling Software
Enter the audit period and select reporting units
Complete set of instuctions for the WaterRF Component Analysis Modeling
Software
Start Page
AWWA Water Balance
Performance Indicators
Real Loss Components
Failure Frequency
A-L-R Times
Economic Intervention
Pressure Management
License
Summary
RL Components Chart
Glossary
Instructions
WRF
Leakage Component
Analysis Model
(2014)
AWWA Free Water Audit Softwarev4.2 – 2010 v5.0 – 2014
Water Audit Report for:
Reporting Year:
PLEASE CHOOSE REPORTING UNITS FROM THE INSTRUCTIONS SHEET BEFORE ENTERING DATA
Master Meter Error Adjustments
WATER SUPPLIED Pcnt: Value:
Volume from own sources:
Water imported:
Water exported:
Enter negative % or value for under-registration
WATER SUPPLIED: 0.000 Enter positive % or value for over-registration.
AUTHORIZED CONSUMPTION
Billed metered:
Billed unmetered:
Unbilled metered: Pcnt: Value:
Unbilled unmetered: 0.000 1.25% 24061
AUTHORIZED CONSUMPTION: 0.000
WATER LOSSES (Water Supplied - Authorized Consumption) 0.000
Apparent Losses Pcnt: Value:
Unauthorized consumption: 8 0.000 0.25%
Customer metering inaccuracies: 5 0.000 1.00%
Systematic data handling errors: 4 0.000 0.25%
Apparent Losses: 0.000
Real Losses (Current Annual Real Losses or CARL)
Real Losses = Water Losses - Apparent Losses: 0.000
WATER LOSSES: 0.000
NON-REVENUE WATER
NON-REVENUE WATER: 0.000
= Water Losses + Unbilled Metered + Unbilled Unmetered
SYSTEM DATA
Length of mains:
Number of active AND inactive service connections:
Service connection density:
Select...
Average length of customer service line:
Average operating pressure:
COST DATA
Total annual cost of operating water system: $/Year
Customer retail unit cost (applied to Apparent Losses):
Variable production cost (applied to Real Losses): $/
WATER AUDIT DATA VALIDITY SCORE:
PRIORITY AREAS FOR ATTENTION:
Are customer meters typically located at the curbstop or property line?
AWWA Free Water Audit Software:
Reporting Worksheet
Default option selected for Unbilled unmetered - a grading of 5 is applied but not displayed
<< Please enter system details and contact information on the Instructions tab >>
Based on the information provided, audit accuracy can be improved by addressing the following components:
<----------- Enter grading in column 'E' and 'J' ---------->
Default option selected for unauthorized consumption - a grading of 5 is applied but not displayed
?
?
?
?
?
? Click to access definition
?
?
?
?
?
?
Please enter data in the white cells below. Where available, metered values should be used; if metered values are unavailable please estimate a value. Indicate your confidence in the accuracy of the input data by grading each component (1-10) using the drop-down list to the left of the input cell. Hover the mouse over the cell to obtain a description of the grades
?
?
?
?
?
?
(length of service line, beyond the property boundary, that is the responsibility of the utility)
Use buttons to selectpercentage of water
suppliedOR
?Click here:
for help using option buttons below
?
?
?
?
+
+ Click to add a comment
WAS v5.0
+
+
+
+
+
+
American Water Works Association.Copyright © 2014, All Rights Reserved.
?
?
?
+
+
+
+
+
+
+
+
+
+
+
+
+ Use Customer Retail Unit Cost to value real losses
?
BETA TEST v1
Water Audit Report for:
Reporting Year:
All volumes to be entered as: MILLION GALLONS (US) PER YEAR
WATER SUPPLIED
Volume from own sources: Million gallons (US)/yr (MG/Yr)
Master meter error adjustment (enter positive value):
Water imported: MG/Yr
Water exported: MG/Yr
WATER SUPPLIED: 0.000 MG/Yr
.
AUTHORIZED CONSUMPTION
Billed metered: MG/Yr
Billed unmetered: MG/Yr
Unbilled metered: MG/Yr Pcnt: Value:
Unbilled unmetered: 0.000 MG/Yr 1.25% 24061
AUTHORIZED CONSUMPTION: 0.000 MG/Yr
WATER LOSSES (Water Supplied - Authorized Consumption) 0.000 MG/Yr
Apparent Losses Pcnt: Value:
Unauthorized consumption: 0.000 MG/Yr 0.25%
Customer metering inaccuracies: 0.000 MG/Yr
Systematic data handling errors: MG/Yr
Apparent Losses: 0.000
Real Losses (Current Annual Real Losses or CARL)
Real Losses = Water Losses - Apparent Losses: 0.000 MG/Yr
WATER LOSSES: 0.000 MG/Yr
NON-REVENUE WATER
NON-REVENUE WATER: 0.000 MG/Yr
= Total Water Loss + Unbilled Metered + Unbilled Unmetered
SYSTEM DATA
Length of mains: miles
Number of active AND inactive service connections:
Connection density: conn./mile main
Average length of customer service line: ft
Average operating pressure: psi
COST DATA
Total annual cost of operating water system: $/Year
Customer retail unit cost (applied to Apparent Losses):
Variable production cost (applied to Real Losses): $/Million gallons
PERFORMANCE INDICATORS
Financial Indicators
Non-revenue water as percent by volume of Water Supplied:
Non-revenue water as percent by cost of operating system:
Annual cost of Apparent Losses:
Annual cost of Real Losses:
Operational Efficiency Indicators
Apparent Losses per service connection per day: gallons/connection/day
Real Losses per service connection per day*: gallons/connection/day
Real Losses per length of main per day*: gallons/mile/day
Real Losses per service connection per day per psi pressure: gallons/connection/day/psi
Unavoidable Annual Real Losses (UARL): Not Valid
From Above, Real Losses = Current Annual Real Losses (CARL): 0.00
* only the most applicable of these two indicators will be calculated
WATER AUDIT DATA VALIDITY SCORE:
PRIORITY AREAS FOR ATTENTION:
1: Billed metered
2: Customer metering inaccuracies
3: Total annual cost of operating water system
*** UARL cannot be calculated as either average pressure, number of connecions or length of mains is too small: SEE UARL DEFINITION ***
Enter a percentage less
than 10% in the red cell
(J42), or select 'Value'
option
Based on the information provided, audit accuracy can be improved by addressing the following components:
Add a grading value for 9 parameter(s) to enable an audit score to be calculated
Infrastructure Leakage Index (ILI) [CARL/UARL]:
Default option selected for unauthorized consumption - a grading of 5 is applied but not displayed
Default option selected for Unbilled unmetered - a grading of 5 is applied but not displayed
AWWA WLCC Free Water Audit Software: Reporting Worksheet
<< Enter grading in column 'E'
MG/Yr
?
?
?
?
?
? Click to access definition
?
?
?
?
?
?
Back to Instructions
Please enter data in the white cells below. Where available, metered values should be used; if metered values are unavailable please estimate a value. Indicate your confidence in the accuracy of the input data by grading each component (1-10) using the drop-down list to the left of the input cell. Hover the mouse over the cell to obtain a description of the grades
?
?
?
?
?
?
?
?
?
(pipe length between curbstop and
customer meter or property boundary)
Use buttons to selectpercentage of water supplied
ORvalue
?Click here:
for help using option buttons below
For more information, click here to see the Grading Matrix worksheet
?
Copyright © 2010, American Water Works Association. All Rights Reserved.
?
?
?
?
WAS v4.2
• Inputs & Outputs separated into 2 tabs
• Meter error adjustment for all water supplied components
• Updated grading matrix and scoring
• Updated definitions
• New Water Loss Dashboard
• New comments page
• Color scheme improvements
Water Audit Report for:
Reporting Year:
PLEASE CHOOSE REPORTING UNITS FROM THE INSTRUCTIONS SHEET BEFORE ENTERING DATA
Master Meter Error Adjustments
WATER SUPPLIED Pcnt: Value:
Volume from own sources:
Water imported:
Water exported:
Enter negative % or value for under-registration
WATER SUPPLIED: 0.000 Enter positive % or value for over-registration.
AUTHORIZED CONSUMPTION
Billed metered:
Billed unmetered:
Unbilled metered: Pcnt: Value:
Unbilled unmetered: 0.000 1.25% 24061
AUTHORIZED CONSUMPTION: 0.000
WATER LOSSES (Water Supplied - Authorized Consumption) 0.000
Apparent Losses Pcnt: Value:
Unauthorized consumption: 8 0.000 0.25%
Customer metering inaccuracies: 5 0.000 1.00%
Systematic data handling errors: 4 0.000 0.25%
Apparent Losses: 0.000
Real Losses (Current Annual Real Losses or CARL)
Real Losses = Water Losses - Apparent Losses: 0.000
WATER LOSSES: 0.000
NON-REVENUE WATER
NON-REVENUE WATER: 0.000
= Water Losses + Unbilled Metered + Unbilled Unmetered
SYSTEM DATA
Length of mains:
Number of active AND inactive service connections:
Service connection density:
Select...
Average length of customer service line:
Average operating pressure:
COST DATA
Total annual cost of operating water system: $/Year
Customer retail unit cost (applied to Apparent Losses):
Variable production cost (applied to Real Losses): $/
WATER AUDIT DATA VALIDITY SCORE:
PRIORITY AREAS FOR ATTENTION:
Are customer meters typically located at the curbstop or property line?
AWWA Free Water Audit Software:
Reporting Worksheet
Default option selected for Unbilled unmetered - a grading of 5 is applied but not displayed
<< Please enter system details and contact information on the Instructions tab >>
Based on the information provided, audit accuracy can be improved by addressing the following components:
<----------- Enter grading in column 'E' and 'J' ---------->
Default option selected for unauthorized consumption - a grading of 5 is applied but not displayed
?
?
?
?
?
? Click to access definition
?
?
?
?
?
?
Please enter data in the white cells below. Where available, metered values should be used; if metered values are unavailable please estimate a value. Indicate your confidence in the accuracy of the input data by grading each component (1-10) using the drop-down list to the left of the input cell. Hover the mouse over the cell to obtain a description of the grades
?
?
?
?
?
?
(length of service line, beyond the property boundary, that is the responsibility of the utility)
Use buttons to selectpercentage of water
suppliedOR
?Click here:
for help using option buttons below
?
?
?
?
+
+ Click to add a comment
WAS v5.0
+
+
+
+
+
+
American Water Works Association.Copyright © 2014, All Rights Reserved.
?
?
?
+
+
+
+
+
+
+
+
+
+
+
+
+ Use Customer Retail Unit Cost to value real losses
?
BETA TEST v1
Water Audit Report for:
Reporting Year:
System Attributes:
Apparent Losses:
+ Real Losses:
= Water Losses:
Unavoidable Annual Real Losses (UARL):
Annual cost of Apparent Losses:
Annual cost of Real Losses: Valued at Variable Production Cost
Performance Indicators:
Non-revenue water as percent by volume of Water Supplied:
Non-revenue water as percent by cost of operating system: Real Losses valued at Variable Production Cost
Apparent Losses per service connection per day:
Real Losses per service connection per day:
Real Losses per length of main per day*:
Real Losses per service connection per day per meter (head) pressure:
From Above, Real Losses = Current Annual Real Losses (CARL):
* This performance indicator applies for systems with a low service connection density of less than 32 service connections/mile of pipeline
Infrastructure Leakage Index (ILI) [CARL/UARL]:
Return to Reporting Worksheet to change this assumpiton
AWWA Free Water Audit Software:
System Attributes and Performance Indicators
********** REPORTING UNITS MUST BE SELECTED ON THE INSTRUCTIONS WORKSHEET BEFORE PERFORMANCE INDICATORS CAN BE DISPLAYED **********
?
?
American Water Works Association.Copyright © 2014, All Rights Reserved.
WAS v5.0
Financial:
Operational Efficiency:
BETA TEST v1
Name of Contact Person: All audit data are entered on theReporting Worksheet
Email Address: Value can be entered by user
Telephone (incl Ext.): 609 883 9500 x236 Value calculated based on input data
Name of City / Utility: These cells contain recommended default values
City/Town/Municipality:
State / Province: Pcnt: Value:
Country: 0.25%
Year: 2013 Calendar Year
Start Date: Enter MM/YYYY numeric format
End Date: Enter MM/YYYY numeric format
Audit Preparation Date:
Volume Reporting Units:
PWSID / Other ID:
If you have questions or comments regarding the software please contact us via email at: [email protected]
The spreadsheet contains several separate worksheets. Sheets can be accessed using the tabs towards the bottom of the screen, or by clicking the buttons below.
David Sayers
Million gallons (US)
Please begin by providing the following information The following guidance will help you complete the Audit
Select a state / province from the list
BETA TEST v3 --- AWWA Free Water Audit Software v5.0 --- BETA TEST v3
Northern San Leandro Combined Water Sewer Storm Utility District
The following worksheets are available by clicking the buttons below or selecting the tabs along the bottom of the page
Townville
Auditors are strongly encouraged to refer to the most current edition of AWWA M36 Manual for Water Audits
for detailed guidance on the water auditing process and targetting loss reduction levels
This spreadsheet-based water audit tool is designed to help quantify and track water losses associated with water distribution systems and identify areas for improved
efficiency and cost recovery. It provides a "top-down" summary water audit format, and is not meant to take the place of a full-scale, comprehensive water audit format.
0007900
USA
Use of Option
(Radio) Buttons:
American Water Works Association Copyright © 2014, All Rights Reserved.
Select the default percentage by choosing the option button on the left
To enter a value, choose this button and enter a value in the cell to the
Instructions
The current sheet.Enter contact
information and basic audit details (year,
units etc)
Performance Indicators
Review theperformance
indicators to evaluate the results of the
audit
Comments
Enter comments to explain how values
were calculated or to document data
sources
Water Balance
The values entered in the Reporting
Worksheet are used to populate the Water
Balance
Dashboard
A graphical summary of the water balance
and Non-Revenue Water components
Grading Matrix
Presents the possible grading options for
each input component of the
audit
Service Connection
Diagram
Diagrams depicting possible customer service connection line configurations
Acknowledgements
Acknowledgements for the AWWA Free Water
Audit Software v5.0
Loss Control Planning
Use this sheet to interpret the results of the audit validity
score and performance
indicators
Definitions
Use this sheet to understand the terms
used in the audit process
Example Audits
Reporting Worksheet and Performance
Indicators examples are shown for two
validated audits
Reporting Worksheet
Enter the required data on this
worksheet to calculate the water balance and data
grading
Water Audit Report for:
Reporting Year:
All volumes to be entered as: MILLION GALLONS (US) PER YEAR
Master Meter Error Adjustments
WATER SUPPLIED Pcnt: Value:
Volume from own sources: 5 1,000.000 MG/Yr 1 MG/Yr
Water imported: MG/Yr MG/Yr
Water exported: 1 100.000 MG/Yr 1 MG/Yr
Enter negative % or value for under-registration
WATER SUPPLIED: 825.000 MG/Yr Enter positive % or value for over-registration.
AUTHORIZED CONSUMPTION
Billed metered: 8 700.000 MG/Yr
Billed unmetered: 9 50.000 MG/Yr
Unbilled metered: MG/Yr Pcnt: Value:
Unbilled unmetered: 10.313 MG/Yr 1.25% MG/Yr24061
AUTHORIZED CONSUMPTION: 760.313 MG/Yr
WATER LOSSES (Water Supplied - Authorized Consumption) 64.688 MG/Yr
Apparent Losses Pcnt: Value:
Unauthorized consumption: 2.063 MG/Yr 0.25% MG/Yr
Customer metering inaccuracies: 5 22.767 MG/Yr 3.15% MG/Yr
Systematic data handling errors: 1.750 MG/Yr 0.25% MG/Yr
Apparent Losses: 26.580 MG/Yr
Real Losses (Current Annual Real Losses or CARL)
Real Losses = Water Losses - Apparent Losses: 38.108 MG/Yr
WATER LOSSES: 64.688 MG/Yr
NON-REVENUE WATER
NON-REVENUE WATER: 75.000 MG/Yr
= Water Losses + Unbilled Metered + Unbilled Unmetered
SYSTEM DATA
Length of mains: 9 100.0 miles
Number of active AND inactive service connections: 6 1,000
Service connection density: 10 conn./mile main
Yes
Average length of customer service line: ft
Average operating pressure: 6 60.0 psi
COST DATA
Total annual cost of operating water system: 9 $1,000,000 $/Year
Customer retail unit cost (applied to Apparent Losses): 7 $3.50
Variable production cost (applied to Real Losses): 5 $485.00 $/Million gallons
WATER AUDIT DATA VALIDITY SCORE:
PRIORITY AREAS FOR ATTENTION:
1: Volume from own sources
2: Customer metering inaccuracies
3: Variable production cost (applied to Real Losses)
Based on the information provided, audit accuracy can be improved by addressing the following components:
$/1000 gallons (US)
<----------- Enter grading in column 'E' and 'J' ---------->
Default option selected for unauthorized consumption - a grading of 5 is applied but not displayed
*** YOUR SCORE IS: 60 out of 100 ***
A weighted scale for the components of consumption and water loss is included in the calculation of the Water Audit Data Validity Score
100.000
25.000
Default option selected for Systematic data handling errors - a grading of 5 is applied but not displayed
Average length of customer service line has been set to zero and a data grading score of 10 has been applied
Are customer meters typically located at the curbstop or property line?
AWWA Free Water Audit Software:
Reporting Worksheet
Default option selected for Unbilled unmetered - a grading of 5 is applied but not displayed
2013 1/2013 - 12/2013
Northern San Leandro Combined Water Sewer Storm Utility District (0007900)
?
?
?
?
?
? Click to access definition
?
?
?
?
?
?
Please enter data in the white cells below. Where available, metered values should be used; if metered values are unavailable please estimate a value. Indicate your confidence in the accuracy of the input data by grading each component (n/a or 1-10) using the drop-down list to the left of the input cell. Hover the mouse over the cell to obtain a description of the grades
?
?
?
?
?
?
(length of service line, beyond the property boundary, that is the responsibility of the utility)
Use buttons to selectpercentage of water
suppliedOR
value
?Click here:
for help using option buttons below
?
?
?
?
+
+ Click to add a comment
WAS v5.0
+
+
+
+
+
+
American Water Works Association.Copyright © 2014, All Rights Reserved.
?
?
?
+
+
+
+
+
+
+
+
+
+
+
+
+ Use Customer Retail Unit Cost to value real losses
?
To select the correct data grading for each input, determine the highest grade where the utility meets or exceeds all criteria for that grade and all grades below it.
Water Audit Report for:
Reporting Year:
All volumes to be entered as: MILLION GALLONS (US) PER YEAR
Master Meter Error Adjustments
WATER SUPPLIED Pcnt: Value:
Volume from own sources: 5 1,000.000 MG/Yr 1 MG/Yr
Water imported: MG/Yr MG/Yr
Water exported: 1 100.000 MG/Yr 9 MG/Yr
Enter negative % or value for under-registration
WATER SUPPLIED: 825.000 MG/Yr Enter positive % or value for over-registration.
AUTHORIZED CONSUMPTION
Billed metered: 8 700.000 MG/Yr
Billed unmetered: 9 50.000 MG/Yr
Unbilled metered: MG/Yr Pcnt: Value:
Unbilled unmetered: 9 10.313 MG/Yr 1.25% MG/Yr24061
AUTHORIZED CONSUMPTION: 760.313 MG/Yr
WATER LOSSES (Water Supplied - Authorized Consumption) 64.688 MG/Yr
Apparent Losses Pcnt: Value:
Unauthorized consumption: 10 3.000 MG/Yr 0.25% MG/Yr
Customer metering inaccuracies: 5 7.071 MG/Yr 1.00% MG/Yr
Systematic data handling errors: 4 5.000 MG/Yr 0.25% MG/Yr
Apparent Losses: 15.071 MG/Yr
Real Losses (Current Annual Real Losses or CARL)
Real Losses = Water Losses - Apparent Losses: 49.617 MG/Yr
WATER LOSSES: 64.688 MG/Yr
NON-REVENUE WATER
NON-REVENUE WATER: 75.000 MG/Yr
= Water Losses + Unbilled Metered + Unbilled Unmetered
SYSTEM DATA
Length of mains: 7 100.0 miles
Number of active AND inactive service connections: 6 1,000
Service connection density: 10 conn./mile main
Yes
Average length of customer service line: ft
Average operating pressure: 6 60.0 psi
COST DATA
Total annual cost of operating water system: 5 $1,000,000 $/Year
Customer retail unit cost (applied to Apparent Losses): 7 $3.50
Variable production cost (applied to Real Losses): 7 $3,000.00 $/Million gallons
WATER AUDIT DATA VALIDITY SCORE:
PRIORITY AREAS FOR ATTENTION:
1: Volume from own sources
2: Customer metering inaccuracies
3: Total annual cost of operating water system
Based on the information provided, audit accuracy can be improved by addressing the following components:
$/1000 gallons (US)
100.000
<----------- Enter grading in column 'E' and 'J' ---------->
Unauthorized consumption volume entered is greater than the recommended default value
5.000
*** YOUR SCORE IS: 60 out of 100 ***
A weighted scale for the components of consumption and water loss is included in the calculation of the Water Audit Data Validity Score
100.000
3.000
25.000
Average length of customer service line has been set to zero and a data grading score of 10 has been applied
Are customer meters typically located at the curbstop or property line?
AWWA Free Water Audit Software:
Reporting Worksheet
Default option selected for Unbilled unmetered - a grading of 5 is applied but not displayed
1.000
2013 1/2013 - 12/2013
Northern San Leandro Combined Water Sewer Storm Utility District (0007900)
?
?
?
?
?
? Click to access definition
?
?
?
?
?
?
Please enter data in the white cells below. Where available, metered values should be used; if metered values are unavailable please estimate a value. Indicate your confidence in the accuracy of the input data by grading each component (n/a or 1-10) using the drop-down list to the left of the input cell. Hover the mouse over the cell to obtain a description of the grades
?
?
?
?
?
?
(length of service line, beyond the property boundary, that is the responsibility of the utility)
Use buttons to selectpercentage of water
suppliedOR
value
?Click here:
for help using option buttons below
?
?
?
?
+
+ Click to add a comment
WAS v5.0
+
+
+
+
+
+
American Water Works Association.Copyright © 2014, All Rights Reserved.
?
?
?
+
+
+
+
+
+
+
+
+
+
+
+
+ Use Customer Retail Unit Cost to value real losses
?
To select the correct data grading for each input, determine the highest grade where the utility meets or exceeds all criteria for that grade and all grades below it.
WATER SUPPLIED
Volume from own sources: 5 1,000.000 Million gallons (US)/yr (MG/Yr)
Master meter error adjustment (enter positive value): 1 100.000
Water imported: MG/Yr
Water exported: 1 75.000 MG/Yr
WATER SUPPLIED: 825.000 MG/Yr
over-registered
<< Enter grading in column 'E'
MG/Yr
?
?
?
?
Water Audit Report for:
Reporting Year:
All volumes to be entered as: MILLION GALLONS (US) PER YEAR
Master Meter Error Adjustments
WATER SUPPLIED Pcnt: Value:
Volume from own sources: 5 1,000.000 MG/Yr 1 MG/Yr
Water imported: MG/Yr MG/Yr
Water exported: 1 100.000 MG/Yr 1 MG/Yr
Enter negative % or value for under-registration
WATER SUPPLIED: 825.000 MG/Yr Enter positive % or value for over-registration.
AUTHORIZED CONSUMPTION
Billed metered: 8 700.000 MG/Yr
Billed unmetered: 9 50.000 MG/Yr
Unbilled metered: MG/Yr Pcnt: Value:
Unbilled unmetered: 10.313 MG/Yr 1.25% MG/Yr24061
AUTHORIZED CONSUMPTION: 760.313 MG/Yr
WATER LOSSES (Water Supplied - Authorized Consumption) 64.688 MG/Yr
Apparent Losses Pcnt: Value:
Unauthorized consumption: 2.063 MG/Yr 0.25% MG/Yr
Customer metering inaccuracies: 5 22.767 MG/Yr 3.15% MG/Yr
Systematic data handling errors: 1.750 MG/Yr 0.25% MG/Yr
Apparent Losses: 26.580 MG/Yr
Real Losses (Current Annual Real Losses or CARL)
Real Losses = Water Losses - Apparent Losses: 38.108 MG/Yr
WATER LOSSES: 64.688 MG/Yr
NON-REVENUE WATER
NON-REVENUE WATER: 75.000 MG/Yr
= Water Losses + Unbilled Metered + Unbilled Unmetered
SYSTEM DATA
Length of mains: 9 100.0 miles
Number of active AND inactive service connections: 6 1,000
Service connection density: 10 conn./mile main
Yes
Average length of customer service line: ft
Average operating pressure: 6 60.0 psi
COST DATA
Total annual cost of operating water system: 9 $1,000,000 $/Year
Customer retail unit cost (applied to Apparent Losses): 7 $3.50
Variable production cost (applied to Real Losses): 5 $485.00 $/Million gallons
WATER AUDIT DATA VALIDITY SCORE:
PRIORITY AREAS FOR ATTENTION:
1: Volume from own sources
2: Customer metering inaccuracies
3: Variable production cost (applied to Real Losses)
Based on the information provided, audit accuracy can be improved by addressing the following components:
$/1000 gallons (US)
<----------- Enter grading in column 'E' and 'J' ---------->
Default option selected for unauthorized consumption - a grading of 5 is applied but not displayed
*** YOUR SCORE IS: 60 out of 100 ***
A weighted scale for the components of consumption and water loss is included in the calculation of the Water Audit Data Validity Score
100.000
25.000
Default option selected for Systematic data handling errors - a grading of 5 is applied but not displayed
Average length of customer service line has been set to zero and a data grading score of 10 has been applied
Are customer meters typically located at the curbstop or property line?
AWWA Free Water Audit Software:
Reporting Worksheet
Default option selected for Unbilled unmetered - a grading of 5 is applied but not displayed
2013 1/2013 - 12/2013
Northern San Leandro Combined Water Sewer Storm Utility District (0007900)
?
?
?
?
?
? Click to access definition
?
?
?
?
?
?
Please enter data in the white cells below. Where available, metered values should be used; if metered values are unavailable please estimate a value. Indicate your confidence in the accuracy of the input data by grading each component (n/a or 1-10) using the drop-down list to the left of the input cell. Hover the mouse over the cell to obtain a description of the grades
?
?
?
?
?
?
(length of service line, beyond the property boundary, that is the responsibility of the utility)
Use buttons to selectpercentage of water
suppliedOR
value
?Click here:
for help using option buttons below
?
?
?
?
+
+ Click to add a comment
WAS v5.0
+
+
+
+
+
+
American Water Works Association.Copyright © 2014, All Rights Reserved.
?
?
?
+
+
+
+
+
+
+
+
+
+
+
+
+ Use Customer Retail Unit Cost to value real losses
?
To select the correct data grading for each input, determine the highest grade where the utility meets or exceeds all criteria for that grade and all grades below it.
Water Audit Report for:
Reporting Year:
All volumes to be entered as: MILLION GALLONS (US) PER YEAR
Master Meter Error Adjustments
WATER SUPPLIED Pcnt: Value:
Volume from own sources: 5 1,000.000 MG/Yr 1 MG/Yr
Water imported: MG/Yr MG/Yr
Water exported: 1 100.000 MG/Yr 1 MG/Yr
Enter negative % or value for under-registration
WATER SUPPLIED: 825.000 MG/Yr Enter positive % or value for over-registration.
AUTHORIZED CONSUMPTION
Billed metered: 8 700.000 MG/Yr
Billed unmetered: 9 50.000 MG/Yr
Unbilled metered: MG/Yr Pcnt: Value:
Unbilled unmetered: 10.313 MG/Yr 1.25% MG/Yr24061
AUTHORIZED CONSUMPTION: 760.313 MG/Yr
WATER LOSSES (Water Supplied - Authorized Consumption) 64.688 MG/Yr
Apparent Losses Pcnt: Value:
Unauthorized consumption: 2.063 MG/Yr 0.25% MG/Yr
Customer metering inaccuracies: 5 22.767 MG/Yr 3.15% MG/Yr
Systematic data handling errors: 1.750 MG/Yr 0.25% MG/Yr
Apparent Losses: 26.580 MG/Yr
Real Losses (Current Annual Real Losses or CARL)
Real Losses = Water Losses - Apparent Losses: 38.108 MG/Yr
WATER LOSSES: 64.688 MG/Yr
NON-REVENUE WATER
NON-REVENUE WATER: 75.000 MG/Yr
= Water Losses + Unbilled Metered + Unbilled Unmetered
SYSTEM DATA
Length of mains: 9 100.0 miles
Number of active AND inactive service connections: 6 1,000
Service connection density: 10 conn./mile main
Yes
Average length of customer service line: ft
Average operating pressure: 6 60.0 psi
COST DATA
Total annual cost of operating water system: 9 $1,000,000 $/Year
Customer retail unit cost (applied to Apparent Losses): 7 $3.50
Variable production cost (applied to Real Losses): 5 $485.00 $/Million gallons
WATER AUDIT DATA VALIDITY SCORE:
PRIORITY AREAS FOR ATTENTION:
1: Volume from own sources
2: Customer metering inaccuracies
3: Variable production cost (applied to Real Losses)
Based on the information provided, audit accuracy can be improved by addressing the following components:
$/1000 gallons (US)
<----------- Enter grading in column 'E' and 'J' ---------->
Default option selected for unauthorized consumption - a grading of 5 is applied but not displayed
*** YOUR SCORE IS: 60 out of 100 ***
A weighted scale for the components of consumption and water loss is included in the calculation of the Water Audit Data Validity Score
100.000
25.000
Default option selected for Systematic data handling errors - a grading of 5 is applied but not displayed
Average length of customer service line has been set to zero and a data grading score of 10 has been applied
Are customer meters typically located at the curbstop or property line?
AWWA Free Water Audit Software:
Reporting Worksheet
Default option selected for Unbilled unmetered - a grading of 5 is applied but not displayed
2013 1/2013 - 12/2013
Northern San Leandro Combined Water Sewer Storm Utility District (0007900)
?
?
?
?
?
? Click to access definition
?
?
?
?
?
?
Please enter data in the white cells below. Where available, metered values should be used; if metered values are unavailable please estimate a value. Indicate your confidence in the accuracy of the input data by grading each component (n/a or 1-10) using the drop-down list to the left of the input cell. Hover the mouse over the cell to obtain a description of the grades
?
?
?
?
?
?
(length of service line, beyond the property boundary, that is the responsibility of the utility)
Use buttons to selectpercentage of water
suppliedOR
value
?Click here:
for help using option buttons below
?
?
?
?
+
+ Click to add a comment
WAS v5.0
+
+
+
+
+
+
American Water Works Association.Copyright © 2014, All Rights Reserved.
?
?
?
+
+
+
+
+
+
+
+
+
+
+
+
+ Use Customer Retail Unit Cost to value real losses
?
To select the correct data grading for each input, determine the highest grade where the utility meets or exceeds all criteria for that grade and all grades below it.
Water Audit Report for:
Reporting Year:
All volumes to be entered as: MILLION GALLONS (US) PER YEAR
Master Meter Error Adjustments
WATER SUPPLIED Pcnt: Value:
Volume from own sources: 5 1,000.000 MG/Yr 1 MG/Yr
Water imported: MG/Yr MG/Yr
Water exported: 1 100.000 MG/Yr 1 MG/Yr
Enter negative % or value for under-registration
WATER SUPPLIED: 825.000 MG/Yr Enter positive % or value for over-registration.
AUTHORIZED CONSUMPTION
Billed metered: 8 700.000 MG/Yr
Billed unmetered: 9 50.000 MG/Yr
Unbilled metered: MG/Yr Pcnt: Value:
Unbilled unmetered: 10.313 MG/Yr 1.25% MG/Yr24061
AUTHORIZED CONSUMPTION: 760.313 MG/Yr
WATER LOSSES (Water Supplied - Authorized Consumption) 64.688 MG/Yr
Apparent Losses Pcnt: Value:
Unauthorized consumption: 2.063 MG/Yr 0.25% MG/Yr
Customer metering inaccuracies: 5 22.767 MG/Yr 3.15% MG/Yr
Systematic data handling errors: 1.750 MG/Yr 0.25% MG/Yr
Apparent Losses: 26.580 MG/Yr
Real Losses (Current Annual Real Losses or CARL)
Real Losses = Water Losses - Apparent Losses: 38.108 MG/Yr
WATER LOSSES: 64.688 MG/Yr
NON-REVENUE WATER
NON-REVENUE WATER: 75.000 MG/Yr
= Water Losses + Unbilled Metered + Unbilled Unmetered
SYSTEM DATA
Length of mains: 9 100.0 miles
Number of active AND inactive service connections: 6 1,000
Service connection density: 10 conn./mile main
Yes
Average length of customer service line: ft
Average operating pressure: 6 60.0 psi
COST DATA
Total annual cost of operating water system: 9 $1,000,000 $/Year
Customer retail unit cost (applied to Apparent Losses): 7 $3.50
Variable production cost (applied to Real Losses): 5 $485.00 $/Million gallons
WATER AUDIT DATA VALIDITY SCORE:
PRIORITY AREAS FOR ATTENTION:
1: Volume from own sources
2: Customer metering inaccuracies
3: Variable production cost (applied to Real Losses)
Based on the information provided, audit accuracy can be improved by addressing the following components:
$/1000 gallons (US)
<----------- Enter grading in column 'E' and 'J' ---------->
Default option selected for unauthorized consumption - a grading of 5 is applied but not displayed
*** YOUR SCORE IS: 60 out of 100 ***
A weighted scale for the components of consumption and water loss is included in the calculation of the Water Audit Data Validity Score
100.000
25.000
Default option selected for Systematic data handling errors - a grading of 5 is applied but not displayed
Average length of customer service line has been set to zero and a data grading score of 10 has been applied
Are customer meters typically located at the curbstop or property line?
AWWA Free Water Audit Software:
Reporting Worksheet
Default option selected for Unbilled unmetered - a grading of 5 is applied but not displayed
2013 1/2013 - 12/2013
Northern San Leandro Combined Water Sewer Storm Utility District (0007900)
?
?
?
?
?
? Click to access definition
?
?
?
?
?
?
Please enter data in the white cells below. Where available, metered values should be used; if metered values are unavailable please estimate a value. Indicate your confidence in the accuracy of the input data by grading each component (n/a or 1-10) using the drop-down list to the left of the input cell. Hover the mouse over the cell to obtain a description of the grades
?
?
?
?
?
?
(length of service line, beyond the property boundary, that is the responsibility of the utility)
Use buttons to selectpercentage of water
suppliedOR
value
?Click here:
for help using option buttons below
?
?
?
?
+
+ Click to add a comment
WAS v5.0
+
+
+
+
+
+
American Water Works Association.Copyright © 2014, All Rights Reserved.
?
?
?
+
+
+
+
+
+
+
+
+
+
+
+
+ Use Customer Retail Unit Cost to value real losses
?
To select the correct data grading for each input, determine the highest grade where the utility meets or exceeds all criteria for that grade and all grades below it.
Water Audit Report for:
Reporting Year:
All volumes to be entered as: MILLION GALLONS (US) PER YEAR
Master Meter Error Adjustments
WATER SUPPLIED Pcnt: Value:
Volume from own sources: 5 1,000.000 MG/Yr 1 MG/Yr
Water imported: MG/Yr MG/Yr
Water exported: 1 100.000 MG/Yr 1 MG/Yr
Enter negative % or value for under-registration
WATER SUPPLIED: 825.000 MG/Yr Enter positive % or value for over-registration.
AUTHORIZED CONSUMPTION
Billed metered: 8 700.000 MG/Yr
Billed unmetered: 9 50.000 MG/Yr
Unbilled metered: MG/Yr Pcnt: Value:
Unbilled unmetered: 10.313 MG/Yr 1.25% MG/Yr24061
AUTHORIZED CONSUMPTION: 760.313 MG/Yr
WATER LOSSES (Water Supplied - Authorized Consumption) 64.688 MG/Yr
Apparent Losses Pcnt: Value:
Unauthorized consumption: 2.063 MG/Yr 0.25% MG/Yr
Customer metering inaccuracies: 5 22.767 MG/Yr 3.15% MG/Yr
Systematic data handling errors: 1.750 MG/Yr 0.25% MG/Yr
Apparent Losses: 26.580 MG/Yr
Real Losses (Current Annual Real Losses or CARL)
Real Losses = Water Losses - Apparent Losses: 38.108 MG/Yr
WATER LOSSES: 64.688 MG/Yr
NON-REVENUE WATER
NON-REVENUE WATER: 75.000 MG/Yr
= Water Losses + Unbilled Metered + Unbilled Unmetered
SYSTEM DATA
Length of mains: 9 100.0 miles
Number of active AND inactive service connections: 6 1,000
Service connection density: 10 conn./mile main
Yes
Average length of customer service line: ft
Average operating pressure: 6 60.0 psi
COST DATA
Total annual cost of operating water system: 9 $1,000,000 $/Year
Customer retail unit cost (applied to Apparent Losses): 7 $3.50
Variable production cost (applied to Real Losses): 5 $485.00 $/Million gallons
WATER AUDIT DATA VALIDITY SCORE:
PRIORITY AREAS FOR ATTENTION:
1: Volume from own sources
2: Customer metering inaccuracies
3: Variable production cost (applied to Real Losses)
Based on the information provided, audit accuracy can be improved by addressing the following components:
$/1000 gallons (US)
<----------- Enter grading in column 'E' and 'J' ---------->
Default option selected for unauthorized consumption - a grading of 5 is applied but not displayed
*** YOUR SCORE IS: 60 out of 100 ***
A weighted scale for the components of consumption and water loss is included in the calculation of the Water Audit Data Validity Score
100.000
25.000
Default option selected for Systematic data handling errors - a grading of 5 is applied but not displayed
Average length of customer service line has been set to zero and a data grading score of 10 has been applied
Are customer meters typically located at the curbstop or property line?
AWWA Free Water Audit Software:
Reporting Worksheet
Default option selected for Unbilled unmetered - a grading of 5 is applied but not displayed
2013 1/2013 - 12/2013
Northern San Leandro Combined Water Sewer Storm Utility District (0007900)
?
?
?
?
?
? Click to access definition
?
?
?
?
?
?
Please enter data in the white cells below. Where available, metered values should be used; if metered values are unavailable please estimate a value. Indicate your confidence in the accuracy of the input data by grading each component (n/a or 1-10) using the drop-down list to the left of the input cell. Hover the mouse over the cell to obtain a description of the grades
?
?
?
?
?
?
(length of service line, beyond the property boundary, that is the responsibility of the utility)
Use buttons to selectpercentage of water
suppliedOR
value
?Click here:
for help using option buttons below
?
?
?
?
+
+ Click to add a comment
WAS v5.0
+
+
+
+
+
+
American Water Works Association.Copyright © 2014, All Rights Reserved.
?
?
?
+
+
+
+
+
+
+
+
+
+
+
+
+ Use Customer Retail Unit Cost to value real losses
?
To select the correct data grading for each input, determine the highest grade where the utility meets or exceeds all criteria for that grade and all grades below it.
Water Audit Report for:
Reporting Year:
All volumes to be entered as: MILLION GALLONS (US) PER YEAR
Master Meter Error Adjustments
WATER SUPPLIED Pcnt: Value:
Volume from own sources: 5 1,000.000 MG/Yr 1 MG/Yr
Water imported: MG/Yr MG/Yr
Water exported: 1 100.000 MG/Yr 1 MG/Yr
Enter negative % or value for under-registration
WATER SUPPLIED: 825.000 MG/Yr Enter positive % or value for over-registration.
AUTHORIZED CONSUMPTION
Billed metered: 8 700.000 MG/Yr
Billed unmetered: 9 50.000 MG/Yr
Unbilled metered: MG/Yr Pcnt: Value:
Unbilled unmetered: 10.313 MG/Yr 1.25% MG/Yr24061
AUTHORIZED CONSUMPTION: 760.313 MG/Yr
WATER LOSSES (Water Supplied - Authorized Consumption) 64.688 MG/Yr
Apparent Losses Pcnt: Value:
Unauthorized consumption: 2.063 MG/Yr 0.25% MG/Yr
Customer metering inaccuracies: 5 22.767 MG/Yr 3.15% MG/Yr
Systematic data handling errors: 1.750 MG/Yr 0.25% MG/Yr
Apparent Losses: 26.580 MG/Yr
Real Losses (Current Annual Real Losses or CARL)
Real Losses = Water Losses - Apparent Losses: 38.108 MG/Yr
WATER LOSSES: 64.688 MG/Yr
NON-REVENUE WATER
NON-REVENUE WATER: 75.000 MG/Yr
= Water Losses + Unbilled Metered + Unbilled Unmetered
SYSTEM DATA
Length of mains: 9 100.0 miles
Number of active AND inactive service connections: 6 1,000
Service connection density: 10 conn./mile main
Yes
Average length of customer service line: ft
Average operating pressure: 6 60.0 psi
COST DATA
Total annual cost of operating water system: 9 $1,000,000 $/Year
Customer retail unit cost (applied to Apparent Losses): 7 $3.50
Variable production cost (applied to Real Losses): 5 $485.00 $/Million gallons
WATER AUDIT DATA VALIDITY SCORE:
PRIORITY AREAS FOR ATTENTION:
1: Volume from own sources
2: Customer metering inaccuracies
3: Variable production cost (applied to Real Losses)
Based on the information provided, audit accuracy can be improved by addressing the following components:
$/1000 gallons (US)
<----------- Enter grading in column 'E' and 'J' ---------->
Default option selected for unauthorized consumption - a grading of 5 is applied but not displayed
*** YOUR SCORE IS: 60 out of 100 ***
A weighted scale for the components of consumption and water loss is included in the calculation of the Water Audit Data Validity Score
100.000
25.000
Default option selected for Systematic data handling errors - a grading of 5 is applied but not displayed
Average length of customer service line has been set to zero and a data grading score of 10 has been applied
Are customer meters typically located at the curbstop or property line?
AWWA Free Water Audit Software:
Reporting Worksheet
Default option selected for Unbilled unmetered - a grading of 5 is applied but not displayed
2013 1/2013 - 12/2013
Northern San Leandro Combined Water Sewer Storm Utility District (0007900)
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Please enter data in the white cells below. Where available, metered values should be used; if metered values are unavailable please estimate a value. Indicate your confidence in the accuracy of the input data by grading each component (n/a or 1-10) using the drop-down list to the left of the input cell. Hover the mouse over the cell to obtain a description of the grades
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(length of service line, beyond the property boundary, that is the responsibility of the utility)
Use buttons to selectpercentage of water
suppliedOR
value
?Click here:
for help using option buttons below
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+
+ Click to add a comment
WAS v5.0
+
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+
+
American Water Works Association.Copyright © 2014, All Rights Reserved.
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+
+
+
+
+
+
+
+
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+ Use Customer Retail Unit Cost to value real losses
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To select the correct data grading for each input, determine the highest grade where the utility meets or exceeds all criteria for that grade and all grades below it.
Water Audit Report for: Northern San Leandro Combined Water Sewer Storm Utility District (0007900)
Reporting Year:
System Attributes:
Apparent Losses: 15.071 MG/Yr
+ Real Losses: 49.617 MG/Yr
= Water Losses: 64.688 MG/Yr
Unavoidable Annual Real Losses (UARL): 15.13 MG/Yr
Annual cost of Apparent Losses: $52,747
Annual cost of Real Losses: $148,850 Valued at Variable Production Cost
Performance Indicators:
Non-revenue water as percent by volume of Water Supplied: 9.1%
Non-revenue water as percent by cost of operating system: 23.3% Real Losses valued at Variable Production Cost
Apparent Losses per service connection per day: 41.29 gallons/connection/day
Real Losses per service connection per day: N/A gallons/connection/day
Real Losses per length of main per day*: 1,359.36 gallons/mile/day
Real Losses per service connection per day per psi pressure: N/A gallons/connection/day/psi
From Above, Real Losses = Current Annual Real Losses (CARL): 49.62 million gallons/year
3.28
* This performance indicator applies for systems with a low service connection density of less than 32 service connections/mile of pipeline
Infrastructure Leakage Index (ILI) [CARL/UARL]:
2013 1/2013 - 12/2013
Return to Reporting Worksheet to change this assumpiton
AWWA Free Water Audit Software:
System Attributes and Performance Indicators
*** YOUR WATER AUDIT DATA VALIDITY SCORE IS: 60 out of 100 ***
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American Water Works Association.Copyright © 2014, All Rights Reserved.
WAS v5.0
Financial:
Operational Efficiency:
General Comment:
Audit Item
Volume from own sources:
Vol. from own sources: Master meter
error adjustment:
Water imported:
Water imported: master meter error
adjustment:
Water exported:
Water exported: master meter error
adjustment:
Billed metered:
n/a
Use this worksheet to add comments or notes to explain how an input value was calculated, or to document the sources of the information used.
Meter readings taken monthly via drive by reading. Error adjustment calculated from calibration and flow test results: 1.25% under-registration x 122 MG exported
= 1.53 MG volume error adjustment.
Comment
The real water loss contributers are the booster tank over flows 700 GPM in 400 GPM out. The village needs a SCADA system for automation on
the pumps to prevent over flows.
Daily readings are manually recorded and transferred to the Monthly Operating Report. Error adjustment calculated from calibration and flow test results: 3.77%
over-registration x 855 MG produced = 32.23 MG volume error adjustment.
n/a
AWWA WLCC Free Water Audit Software:
User Comments
Wholesale to Buncombe County, 3 points of custody transfer: (2) 8" mag meters and (1) 6" turbine meter. Meters are electronically calibrated, and flow tested
once per year.
14,110 accounts, billed monthly. Billed Metered volumed derived from Monthly Billing Register totals by Rate Code. Lag-time adjustment not performed.
Production from 2 groundwater wells, each with a 6" turbine meter. Meter is electronically calibrated, and flow tested once per year.
WAS v5.0
American Water Works Association.Copyright © 2014, All Rights Reserved.
Water Audit Report for:
Reporting Year: 2013 1/2013 - 12/2013
Data Validity Score: 60
Water Exported
75.000
Billed Metered Consumption (water exported
is removed)Revenue Water
700.000
Own SourcesAuthorized
Consumption750.000 Billed Unmetered Consumption 750.000
50.000
760.313 Unbilled Metered Consumption
0.000
900.000 10.313 Unbilled Unmetered Consumption
10.313
Water Supplied Unauthorized Consumption 75.000
Apparent Losses 3.000
825.000 15.071 Customer Metering Inaccuracies
7.071
Systematic Data Handling Errors
Water Losses 5.000
Water Imported 64.688Leakage on Transmission and/or Distribution
Mains
Real Losses Not broken down
0.00049.617
Leakage and Overflows at Utility's Storage
Tanks
Not broken down
Leakage on Service ConnectionsNot broken down
AWWA Free Water Audit Software: Water Balance
Non-Revenue Water
(NRW)
Billed Authorized Consumption
Unbilled Authorized Consumption
(Adjusted for known
errors)
Billed Water Exported
Northern San Leandro Combined Water Sewer Storm Utility District (0007900)
WAS v5.0
American Water Works Association.Copyright © 2014, All Rights Reserved.
Water Audit Report for:
Reporting Year: 2013 Show me the VOLUME of Non-Revenue Water
Data Validity Score: 60 Show me the COST of Non-Revenue Water
AWWA Free Water Audit Software:
Dashboard
1/2013 - 12/2013
Northern San Leandro Combined Water Sewer Storm Utility District (0007900)
0
5
10
15
20
25
30
35
40
45
Volu
me
(MG
/Yr)
Total Volume of NRW = 75 MG/Yr
Unbilled metered (valued at Var. Prod. Cost)
Unbilled unmetered (valued at Var. Prod. Cost)
Unauth. consumption
Cust. metering inaccuracies
Syst. data handling errors
Real Losses (valued at Var. Prod. Cost)
WAS v5.0
American Water Works Association.Copyright © 2014, All Rights Reserved.
Water Exported
Authorized Consumption
Water Losses
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
Water Exported
Water Imported
Volume From OwnSources
Water Exported
Billed Auth. Cons.
Unbilled Auth. Cons.
Apparent Losses
Real Losses
Water Exported
Revenue Water
Non Revenue Water
The graphic below is a visual representation of the Water Balance with bar heights propotional to the
volume of the audit components
Water Exported
Water Supplied
Water Audit Report for:
Reporting Year: 2013 Show me the VOLUME of Non-Revenue Water
Data Validity Score: 60 Show me the COST of Non-Revenue Water
AWWA Free Water Audit Software:
Dashboard
1/2013 - 12/2013
Northern San Leandro Combined Water Sewer Storm Utility District (0007900)
0
10,000
20,000
30,000
40,000
50,000
60,000
70,000
80,000
90,000
Co
st $
Total Cost of NRW =$116,513
Unbilled metered (valued at Var. Prod. Cost)
Unbilled unmetered (valued at Var. Prod. Cost)
Unauth. consumption
Cust. metering inaccuracies
Syst. data handling errors
Real Losses (valued at Var. Prod. Cost)
WAS v5.0
American Water Works Association.Copyright © 2014, All Rights Reserved.
Water Exported
Authorized Consumption
Water Losses
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
Water Exported
Water Imported
Volume From OwnSources
Water Exported
Billed Auth. Cons.
Unbilled Auth. Cons.
Apparent Losses
Real Losses
Water Exported
Revenue Water
Non Revenue Water
The graphic below is a visual representation of the Water Balance with bar heights propotional to the
volume of the audit components
Water Exported
Water Supplied
Water Audit Report for:
Reporting Year: 2013 Show me the VOLUME of Non-Revenue Water
Data Validity Score: 60 Show me the COST of Non-Revenue Water
AWWA Free Water Audit Software:
Dashboard
1/2013 - 12/2013
Northern San Leandro Combined Water Sewer Storm Utility District (0007900)
0
10,000
20,000
30,000
40,000
50,000
60,000
70,000
80,000
90,000
Co
st $
Total Cost of NRW =$116,513
Unbilled metered (valued at Var. Prod. Cost)
Unbilled unmetered (valued at Var. Prod. Cost)
Unauth. consumption
Cust. metering inaccuracies
Syst. data handling errors
Real Losses (valued at Var. Prod. Cost)
WAS v5.0
American Water Works Association.Copyright © 2014, All Rights Reserved.
Water Exported
Authorized Consumption
Water Losses
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
Water Exported
Water Imported
Volume From OwnSources
Water Exported
Billed Auth. Cons.
Unbilled Auth. Cons.
Apparent Losses
Real Losses
Water Exported
Revenue Water
Non Revenue Water
The graphic below is a visual representation of the Water Balance with bar heights propotional to the
volume of the audit components
Water Exported
Water Supplied
Water Audit Report for:
Reporting Year: 2013 Show me the VOLUME of Non-Revenue Water
Data Validity Score: 60 Show me the COST of Non-Revenue Water
AWWA Free Water Audit Software:
Dashboard
1/2013 - 12/2013
Northern San Leandro Combined Water Sewer Storm Utility District (0007900)
0
5
10
15
20
25
30
35
40
45
Volu
me
(MG
/Yr)
Total Volume of NRW = 75 MG/Yr
Unbilled metered (valued at Var. Prod. Cost)
Unbilled unmetered (valued at Var. Prod. Cost)
Unauth. consumption
Cust. metering inaccuracies
Syst. data handling errors
Real Losses (valued at Var. Prod. Cost)
WAS v5.0
American Water Works Association.Copyright © 2014, All Rights Reserved.
Water Exported
Authorized Consumption
Water Losses
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
Water Exported
Water Imported
Volume From OwnSources
Water Exported
Billed Auth. Cons.
Unbilled Auth. Cons.
Apparent Losses
Real Losses
Water Exported
Revenue Water
Non Revenue Water
The graphic below is a visual representation of the Water Balance with bar heights propotional to the
volume of the audit components
Water Exported
Water Supplied
• Inputs & Outputs separated into 2 tabs
• Meter error adjustment for all water supplied components
• Updated grading matrix and scoring
• Updated definitions
• New Water Loss Dashboard
• New comments page
• Color scheme improvements
Water Audit Report for:
Reporting Year:
PLEASE CHOOSE REPORTING UNITS FROM THE INSTRUCTIONS SHEET BEFORE ENTERING DATA
Master Meter Error Adjustments
WATER SUPPLIED Pcnt: Value:
Volume from own sources:
Water imported:
Water exported:
Enter negative % or value for under-registration
WATER SUPPLIED: 0.000 Enter positive % or value for over-registration.
AUTHORIZED CONSUMPTION
Billed metered:
Billed unmetered:
Unbilled metered: Pcnt: Value:
Unbilled unmetered: 0.000 1.25% 24061
AUTHORIZED CONSUMPTION: 0.000
WATER LOSSES (Water Supplied - Authorized Consumption) 0.000
Apparent Losses Pcnt: Value:
Unauthorized consumption: 8 0.000 0.25%
Customer metering inaccuracies: 5 0.000 1.00%
Systematic data handling errors: 4 0.000 0.25%
Apparent Losses: 0.000
Real Losses (Current Annual Real Losses or CARL)
Real Losses = Water Losses - Apparent Losses: 0.000
WATER LOSSES: 0.000
NON-REVENUE WATER
NON-REVENUE WATER: 0.000
= Water Losses + Unbilled Metered + Unbilled Unmetered
SYSTEM DATA
Length of mains:
Number of active AND inactive service connections:
Service connection density:
Select...
Average length of customer service line:
Average operating pressure:
COST DATA
Total annual cost of operating water system: $/Year
Customer retail unit cost (applied to Apparent Losses):
Variable production cost (applied to Real Losses): $/
WATER AUDIT DATA VALIDITY SCORE:
PRIORITY AREAS FOR ATTENTION:
Are customer meters typically located at the curbstop or property line?
AWWA Free Water Audit Software:
Reporting Worksheet
Default option selected for Unbilled unmetered - a grading of 5 is applied but not displayed
<< Please enter system details and contact information on the Instructions tab >>
Based on the information provided, audit accuracy can be improved by addressing the following components:
<----------- Enter grading in column 'E' and 'J' ---------->
Default option selected for unauthorized consumption - a grading of 5 is applied but not displayed
?
?
?
?
?
? Click to access definition
?
?
?
?
?
?
Please enter data in the white cells below. Where available, metered values should be used; if metered values are unavailable please estimate a value. Indicate your confidence in the accuracy of the input data by grading each component (1-10) using the drop-down list to the left of the input cell. Hover the mouse over the cell to obtain a description of the grades
?
?
?
?
?
?
(length of service line, beyond the property boundary, that is the responsibility of the utility)
Use buttons to selectpercentage of water
suppliedOR
?Click here:
for help using option buttons below
?
?
?
?
+
+ Click to add a comment
WAS v5.0
+
+
+
+
+
+
American Water Works Association.Copyright © 2014, All Rights Reserved.
?
?
?
+
+
+
+
+
+
+
+
+
+
+
+
+ Use Customer Retail Unit Cost to value real losses
?
BETA TEST v1
Water Audit Report for:
Reporting Year:
System Attributes:
Apparent Losses:
+ Real Losses:
= Water Losses:
Unavoidable Annual Real Losses (UARL):
Annual cost of Apparent Losses:
Annual cost of Real Losses: Valued at Variable Production Cost
Performance Indicators:
Non-revenue water as percent by volume of Water Supplied:
Non-revenue water as percent by cost of operating system: Real Losses valued at Variable Production Cost
Apparent Losses per service connection per day:
Real Losses per service connection per day:
Real Losses per length of main per day*:
Real Losses per service connection per day per meter (head) pressure:
From Above, Real Losses = Current Annual Real Losses (CARL):
* This performance indicator applies for systems with a low service connection density of less than 32 service connections/mile of pipeline
Infrastructure Leakage Index (ILI) [CARL/UARL]:
Return to Reporting Worksheet to change this assumpiton
AWWA Free Water Audit Software:
System Attributes and Performance Indicators
********** REPORTING UNITS MUST BE SELECTED ON THE INSTRUCTIONS WORKSHEET BEFORE PERFORMANCE INDICATORS CAN BE DISPLAYED **********
?
?
American Water Works Association.Copyright © 2014, All Rights Reserved.
WAS v5.0
Financial:
Operational Efficiency:
BETA TEST v1
AWWA Free
Water Audit
Software
Version 5.0
(2014)
AWWA Manual of Practice
M36 Water Audits &
Loss Control Programs
(2015)
MAIN MENU
©2014 Water Research Foundation. ALL RIGHTS RESERVED.11/17/2014
Comparison of your utility's mains and service line failure frequencies against
industry averages and targets
Summary of the water audit performance indicators and the results of the Real
Losses Component Analysis
Use this sheet to evaluate if pressure management and a reduction in average
system pressure provides an opportunity to reduce real losses cost effectively
Use this sheet to establish a preliminary schedule for proactive leak detection
surveys
Use this sheet to evaluate if a reduction in location and repair times for reported
and unreported leaks would provide an opportunity to reduce real losses
A chart summarizing the results in the Real Loss Component Analysis
Carry out a Real Losses Component Analysis using this sheet
Select your desired water loss performance indicator to be displayed in
comparison to a North American water utility data set
Enter the required data from the AWWA WLCC Free Water Audit Software:
Reporting Sheet to populate the Water Audit
WaterRF 4372: Real Loss Component Analysis: A Tool for Economic Water Loss Control
Glossary of all terms used in the WaterRF 4372 Component Analysis Model
License
Macros must be enabled to properly use the WaterRF 4372 Component Analysis Modeling Software
Enter the audit period and select reporting units
Complete set of instuctions for the WaterRF Component Analysis Modeling
Software
Start Page
AWWA Water Balance
Performance Indicators
Real Loss Components
Failure Frequency
A-L-R Times
Economic Intervention
Pressure Management
License
Summary
RL Components Chart
Glossary
Instructions
WRF
Leakage Component
Analysis Model
(2014)
WRF Project Review #4372Effective Organization & Component Analysis of
Utility Leakage Data
• Eastern Municipal Water District
• Metro Water Services, Nashville TN
• Halifax Regional Water Commission
• City of Folsom Utilities Dept
• San Antonio Water System
• Lake Arrowhead Community Services District
• S. Central CT Regional Water Authority
• City of Phoenix Water Services Dept
• Austin Water Utility
• Water & Wastewater Authority of Wilson
County
• Software model for component analysis of real
losses
• Context for performance indicator results
• Accessibility and adoption
PARTICIPATING UTILITIES:
PROJECT GOALS:
• Funded by the WaterRF and EPA – freely available
• Model Release & Report Publishing in May 2014
• Upcoming Workshops (Denver, CO & Austin, TX)
PROJECT BASICS:
62
Component Analysis of Real Losses
63
Real Losses Calculation for Reported & Un-Reported Leakage
Annual Real Loss Volume from Reported Leaks =
# of leaks by size * average run time * average flow rate (at average system pressure)
Failure Repair Records Awareness Time
Estimation + Failure
Repair Records for
Location & Repair Time
Estimated
based on pipe
size using Break
& Background
Estimate
Methodology
Leakage
Occurrence
Pipe
Diameter
# of
Events
Flow Rate
(gpm)
Average
Run Time
(hrs)
Annual
Leakage
(MG)
Mains Breaks 8” 6 46 8.25 3.3
64
Component Analysis of Real Losses
Four Pillars of Managing Leakage
Unavoidable
Real Losses
Speed & Quality
of Repairs
Pressure
Management
Maintenance
Rehab
Repair
Existing Real Losses
Economic Level
As each component receives
more or less attention, the
losses will increase or
decrease
Active
Leakage
Control
Source: AWWA Water Loss Control Committee
ELL: Defined
Cost of Leakage Control
LOSSES (MGD)
Bac
kg
rou
nd
Lea
kag
e
and
Rep
ort
ed B
reak
s
CO
ST
OF
LE
AK
AG
E C
ON
TR
OL
AN
D W
AT
ER
LO
ST
Economic Leakage Level
Where the total cost is at a minimum
Proactive Leak Detection Model
68
Pressure Management in the Model
69
Response Time Improvement
70
Summarized Component Analysis
WaterRF 4372: Effective Organization and Component Analysis of Water Utility Leakage Data
WaterRF 4372 COMPONENT ANALYSIS MODEL SUMMARY
10.3%
3.0%
$4,376,956
$1,429,630
13.7 gal/service conn/day
56.0 gal/service conn/day
N/A gal/mi/day
0.7 gal/service conn/day/psi
1,453.52 MG/Yr
4,332.21 MG/Yr
3.0
System Component Background LeakageReported
Failures
Unreported
FailuresTotal
(MG) (MG) (MG) (MG)
Reservoirs 22.08 - - 22.08
Mains and Appurtenances 372.61 217.12 173.49 763.22
Service Connections 844.15 39.55 17.46 901.15
Total Annual Real Loss 1,238.83 256.66 190.95 1,686.44
4,332.21
2,645.77
AWARNESS, LOCATION AND REPAIR TIME REDUCTION RESULTS
Reported
Failures
Unreported
Failures
182.3 32.9 (MG)
23,458$ 10,837$ Per Year
ECONOMIC INTERVENTION FREQUENCY FOR PROACTIVE LEAK DETECTION RESULTS
31 %
283,187 $/year
1,787.63 MG/year
5.0 PSI
6%
203.1 MG/Yr
67,026 $/Year
100,000 $
1.5 Years
©2013 Water Research Foundation. ALL RIGHTS RESERVED.
Current Annual Real Losses (CARL):
Real Losses as Calculated by Water Audit
Hidden Losses/Unreported Leakage Currently Running Undetected
Total Potential Cost Savings if Location and Repair Duration is
Reduced as Simulated on the A-L-R Times Options Sheet
7/11/2013
Infrastructure Leakage Index (ILI) [CARL/UARL]:
REAL LOSS COMPONENT ANALYSIS RESULTS
Total Potential Savings if Location and Repair Duration is Reduced
as Simulated on the A-L-R Times Options Sheet
Percentage of the System to be Surveyed per Year
Average Annual Budget for Intervention (Proactive Leak Detection)
User-Estimated Cost of Pressure Reduction
Resulting Pressure Management Program Payback Period
Assumed % Reduction in Average System Pressure
Estimated Real Loss Reduction from Pressure Management Program
Financial Savings from Pressure Management Program
ALTERNATIVE PRESSURE MANAGEMENT SCENARIO RESULTS
Potentially Recoverable Leakage
User-Inputted Reduction in Average System Pressure
Real Losses per length of main per day:
Real Losses per service connection per day per 1787.62743734595 pressure:
Apparent Losses per service connection per day:
Unavoidable Annual Real Losses (UARL):
Water Audit: City of Austin, TX, USA, 2011
Real Losses per service connection per day* :
As the input data is filled into the model, this sheet will populate with the results and recommendations from the
Real Losses Component Analysis, A-L-R Times, Economic Intervention and Pressure Management tabs. The
performance indicators from the AWWA Free Water Audit Software have been added to show a brief review of the
performance the system being analyzed
Annual cost of Real Losses:
Operational Efficiency
WATER AUDIT PERFORMANCE INDICATORS
Financial
Non-revenue water as percent by volume of water supplied:
Non-revenue water as percent by cost of operating system:
Annual cost of Apparent Losses:
AWWA Free
Water Audit
Software
Version 5.0
(2014)
AWWA Manual of Practice
M36 Water Audits &
Loss Control Programs
(2015)
MAIN MENU
©2014 Water Research Foundation. ALL RIGHTS RESERVED.11/17/2014
Comparison of your utility's mains and service line failure frequencies against
industry averages and targets
Summary of the water audit performance indicators and the results of the Real
Losses Component Analysis
Use this sheet to evaluate if pressure management and a reduction in average
system pressure provides an opportunity to reduce real losses cost effectively
Use this sheet to establish a preliminary schedule for proactive leak detection
surveys
Use this sheet to evaluate if a reduction in location and repair times for reported
and unreported leaks would provide an opportunity to reduce real losses
A chart summarizing the results in the Real Loss Component Analysis
Carry out a Real Losses Component Analysis using this sheet
Select your desired water loss performance indicator to be displayed in
comparison to a North American water utility data set
Enter the required data from the AWWA WLCC Free Water Audit Software:
Reporting Sheet to populate the Water Audit
WaterRF 4372: Real Loss Component Analysis: A Tool for Economic Water Loss Control
Glossary of all terms used in the WaterRF 4372 Component Analysis Model
License
Macros must be enabled to properly use the WaterRF 4372 Component Analysis Modeling Software
Enter the audit period and select reporting units
Complete set of instuctions for the WaterRF Component Analysis Modeling
Software
Start Page
AWWA Water Balance
Performance Indicators
Real Loss Components
Failure Frequency
A-L-R Times
Economic Intervention
Pressure Management
License
Summary
RL Components Chart
Glossary
Instructions
WRF
Leakage Component
Analysis Model
(2014)
M36: Water Audits and Loss Control Programs
1991 1999 2009 Dec 2015
• Improved Water Audit Methodology to align with the AWWA Free Water Audit Software
and Water Balance format
• Regulatory Review
• More on Apparent Losses, including billing data analytics and meter management
practices
• More on Real Losses, including the use of pressure management for water loss control
and asset management
• Dedicated Appendix on the subject of verifying production water volumes
• Statistics and analysis from validated water audit data across North America for the
purpose of industry benchmarking
Free Water Audit Software:
awwa.org/waterlosscontrol
Leakage Component Analysis:
Google ‘component analysis 4372’
Benchmarking Water Loss: The Death of Unaccounted for Water
gawp.org
December 8-9, 2015