Download - Manatee County Water Presentation
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WATER 101
MANATEE COUNTY UTILITIES DEPARTMENT
WATER SYSTEM OPERATIONS AND PLANNING
Presented at BCC Work Session
October 13, 2015
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MANATEE COUNTY UTILITIES DEPARTMENT
WATER SYSTEM OPERATIONS AND PLANNING
Service Area
Current Facilities
Demands
Future Potable Supply Plans
System Operations/ Regional Integration
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MANATEE COUNTY UTILITIES DEPARTMENT
SERVICE AREA
Retail Service Area - 113,000 accounts Unincorporated Manatee County west of Lake
Manatee
Island cities of Bradenton Beach, Holmes Beach, and Anna Maria
Wholesale Service Area Sole Supplier
City of Palmetto, Town of Longboat Key
Partial Supplier City of Bradenton, Sarasota County
Total Population Served 325,000
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Lake Manatee
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LAKE MANATEE WTP
Surface Water 2 treatment trains 54 MGD capacity
Conventional treatment coagulation, flocculation, granular media filtration
Ground Water 30 MGD capacity H2S stripping, lime softening, recarbonation,
granular media filtration
Treated filter effluents combined, stabilized, disinfected (chloramines), flouridated
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Generalized Schematic of Manatee County Water System Capacity
E.C. Wellfield(5) X 3.6 MGD(2) X 3.4 MGD
Mosaic Wellfield
(1) X 2.0 MGD,(2) X 9.0 MGD
(emergency)
Lake Manatee 5.9 BG full,
4.7 BG available
Raw 2(3) X 15 MGD
Raw 1(4) X 11.2 MGD(1) X 14.2 MGD
10 MG Gr. Stor 1
Gr. Stor. HSPS(3) X 10.4 MGD
C HSPS(2) X 12.8 MGD
N. HSPS (5) X 5.8 MGD
S. HSPS(5) X 5.9 MGD
ASR Wellfield(5) X 2.0 MGD(1) X 1.4 MGD
WTP84
MGD
DISTRIBUTION
Elwood I BPS(4) x 7.9 MGD(2) X 4.1 MGD(1) X 8.3 MGD
Elwood II BPS(2) x 7.6 MGD
Cortez BPS(3) X 3.8 MGD
Hospital BPS(2) x2.9 MGD
Northwest BPS(3) X 1.48 MGD
Elev. Storage(5) X 1.0MG(1) X 0.5 MG
Ground Storage(3) X 1.5 MG(2) X 1.0 MG
10 MG Gr. Stor 2
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MANATEE COUNTY WATER SYSTEM
PUMP & STORAGE FACILITIES
4 High Service Pump Stations 115 Total MGD, 15 pumps
5 Booster Pump Stations 92 MGD, 17 pumps
Total Storage 34.7 MG 7 Ground Storage Tanks 26.5 MG 6 Elevated Storage Tanks 5.5 MG 3 Clearwells @ WTP 2.7 MG
4 major transmission mains from WTP 42, (2) 36, 30 188 miles > 16
1,201 miles water mains 2 14
18,378 isolation valves, 6,722 hydrants
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MANATEE COUNTY WATER SYSTEM
INTERCONNECTS
Those which can provide limited water to MC Sarasota County 3 on University Parkway (Seminole RR (10),
Lockwood Ridge (30), Lakewood Ranch Blvd. (10))
City of Bradenton 11 (across all of City)
Town of Longboat Key 1 (Gulf Drive)
Those with no other water source City of Palmetto 9 (across N. & E. part of City)
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Projected Demands
35
40
45
50
55
60
65
70
2015 2017 2019 2021 2023 2025 2027 2029 2031 2033 2035
Dri
nki
ng
Wat
er
Dem
and
an
d S
up
ply
(M
GD
)
Planning Period
2014 Water Demand and Supply Update
Current Supply
2024 MARS II Wells 3.0 MGD
Regional Option 5.0 MGD
2014Projected Demandwith 4.55% added conservation
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010
20
30
40
50
60
70
0
10
20
30
40
50
60
70
Dri
nki
ng
Wat
er
De
man
d (
MG
D)
Dri
nki
ng
Wat
er
Sup
ply
(M
GD
)
December 2014 Water Supply UpdateWater Supply Development Plan (Average Day Basis)
Lake Manatee MOSAIC EC WELLS Mars II Regional Supply DEMAND
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Treatment Facilities in 2012 WSFWP
Planned major investments Projected Cost
Lake Manatee WTP Filtration Upgrade $45M
Biological Treatment Unit $23M
Dam R&R $23M
Buffalo Creek WF and WTP $36M
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- Planned Major Infrastructure Reinvestment $127M
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MANATEE COUNTY WATER CONSERVATION
Education/Outreach Bill inserts, website Festivals/events, schools
Indoor Program 10,110 low flow toilet rebates
Outdoor Program 1866 irrigation system evaluations 624 rain sensors 4209 rain barrels 86 shallow well rebates
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MANATEE COUNTY WATER CONSERVATION
50
100
150
200
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77
19
82
19
87
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92
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97
20
02
20
07
20
12
GA
LLO
NS/
CA
PIT
A/D
AY
Per Capita Water Use
SWFWMD Compliance Level = 150 g/p/d
Per Capita was reduced from 200 g/p/d in 1977 to 91 g/p/d in 2014
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FUTURE LOCAL SOURCES FOR
WATER SUPPLY (43-58 MGD)
Increased conservation efforts(5 MGD)
Western wells from GW credits(5 MGD)
East County Well Field from GW credits (8 MGD)
Manatee River Storage (10 MGD) Gilley Creek Reservoir
North and East Fork Reservoir
Dredging of Lake Manatee
Local Sources for Regional Development Flatford Swamp Upper Myakka Basin (10 MGD)
Desalination (5 - 20 MGD)
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GENERAL STATUS
Based on current population projections, supply will likely be good through 2034
Eventually new supplies will be needed and potential sources for development have been
identified
New supplies will have an increased cost
Need for continued investment in infrastructure
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FUTURE SUPPLY OPTIONS
Stretch current supply
Conservation
Use of reclaimed water
Use Ground Water Replacement Credits to increase supply
East County Well Field
New Brackish RO Facility North County (3-6 MGD)
Permitted through groundwater credits earned by use of reclaimed water instead of groundwater
Timing is key variable TBD in next two years
Local Sources for Possible Regional Development
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NEW SUPPLY OPTION ISSUES
Developing New Supplies so that there is Sufficient Quantities of Sufficient Quality Will
Increase Water Costs
Cheap water is no longer available
Stretching Current Supplies through Water Conservation and Reclaimed Offsets is Much
Cheaper than Developing New Supplies
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MANATEE COUNTY WATER SYSTEM
OPERATION / REGIONAL INTEGRATION
MC currently provides all of the water needed for MC customers (112,500 connections)
MC currently provides 6 MGD to Sarasota County
Scheduled to end by 2025
Most effective use of installed assets would continue contract at 4-5 MGD for foreseeable future
Latest projections show need for 5 MG from the PRMRWSA in 2034
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PEACE RIVER MANASOTA REGIONAL
WATER SUPPLY AUTHORITY
An independent special district createdpursuant to Chapter 373 in 1982 by interlocalagreement between Charlotte, DeSoto,Hardee, Manatee and Sarasota Counties
Hardee withdrew in 1983
New interlocal agreement in 1984 betweenremaining four counties
Amended interlocal agreement in 1991(acquisition of PRMRWSA facility)
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PRMRWSA STATUTORY
PURPOSE & RESPONSIBILITY
Develop, recover, store and supply water forcounty or municipal purposes
Design, construct, operate and maintainfacilities in locations and at the times
necessary to ensure adequate water supply
will be available to all citizens within the
Authority
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CONTROLLING RULES /
DOCUMENTS
Chapter 373, 163 Florida Statutes
Chapter 40D, 62, FAC
Second Amended Interlocal Agreement- 2005 Simplified agreement by removal of obsolete
provisions, and transfer of other provisions to the Master Water Supply Contract
Master Water Supply Contract 2005 Regional Expansion Program
Amended twice (Second Amendment -2015)
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PRMRWSA Facility
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CURRENT FACILITIES/LOCATIONS
Reservoirs 6.5 BG total storage
Plant
51 MGD treatment capacity
34.9 MGD permitted production
ASR 21 ASR Wells, 14.2 MGD
Transmission Lines 65 miles of 24-48
(6) 2MG GS tanks
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PRMRWSA Transmission Mains
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ALLOCATIONS FROM 34.9 MGD
PRMRWSA FACILITY
Sarasota County 15.1 MGD
Charlotte County 16.1 MGD
City of North Port 2.8 MGD
DeSoto County 0.7 MGD
Manatee County 0.0 MGD
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FINANCIAL
Pay as you go
Debt based on allocation
3 different facility debt costs (1991, PRO, REP)
Various Pipeline debt costs who it serves
All pay same volumetric rate, but fixed charge is different based on allocation and debt
Volumetric rate is based only on power and chemicals, other costs are assigned to fixed (base) rates
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IDENTIFIED FUTURE SUPPLIES
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FUTURE
Manatee County existing supply sufficient for next 15-25 years
Increase supply through transfer of groundwater credits
Eventual supplies from the PRMRWSA
Have to develop new supply
What is best option
Have to figure out transmission cost component
What is cost recovery mechanism for transmission lines from source to Manatee County
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Questions?