water services national training group and national federation of group water schemes
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Water Services National Training Group and National Federation of Group Water Schemes. 7 th Annual Rural Water Services Conference 18 th September 2008. Quality Assurance System Progress on implementation. Jean Gibson Quality Assurance Officer. National Federation of Group Water Schemes. - PowerPoint PPT PresentationTRANSCRIPT
Water Services National Training Group and
National Federation of Group Water Schemes
7th Annual Rural Water Services Conference
18th September 2008
18/09/08 NFGWS
Quality Assurance Quality Assurance System System Progress on Progress on
implementationimplementationJean GibsonJean Gibson
Quality Assurance OfficerQuality Assurance Officer
National Federation of Group Water Schemes
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ObjectivesObjectives
The Quality Assurance (QA) System The Quality Assurance (QA) System was developed by the NFGWS as a was developed by the NFGWS as a means of ensuring that group means of ensuring that group schemes have the capacity to schemes have the capacity to consistently provide a quality consistently provide a quality drinking water supply to consumers.drinking water supply to consumers.
Security of water supply Security of water supply
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Why this focus?Why this focus?
Treatment itself cannot guarantee Treatment itself cannot guarantee water quality at the consumer’s tap.water quality at the consumer’s tap.
In addition, we require a strategy to In addition, we require a strategy to maintain and improve raw water maintain and improve raw water quality at the source and to protect quality at the source and to protect treated water quality in the treated water quality in the distribution network.distribution network.
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Elements of strategy Elements of strategy
Assessment of what might go wrongAssessment of what might go wrong Will be scheme specificWill be scheme specific Should involve committee and staffShould involve committee and staff
Monitoring to determine if everything is Monitoring to determine if everything is okok
Requires investment in necessary equipmentRequires investment in necessary equipment Implementation of standard operating procedures Implementation of standard operating procedures
(SOP’s)(SOP’s) Dedicated & trained personnelDedicated & trained personnel
Record keepingRecord keeping ChecklistsChecklists Filing systemFiling system
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Standard Standard Operating Operating Procedure Procedure ReservoirsReservoirs
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Hazards
Control Options Critical Limits (to measure the control options)
Corrective action
What to check
Signs that action is needed
Event: INTRODUCTION OF CONTAMINATING MATERIAL INTO TANK OR RESERVOIRPossible contaminants: Bacteria, protozoan, chemicals, or other health-significant determinants depending on the contaminant that has entered the water.
Access by humans, animals,
birds or
rainwater
ensure the storage is covered
keep cattle away using stock proof fencing
Keep grass and shrubs trimmed and to a minimum to prevent vermin.
install mesh, grills, vents, etc.
undertake regular tank inspection
Site inspection record for visual/ maintenance.
Check chlorine residual
Unexplained deterioration of water quality.
Taste and odour complaints.
Visual evidence of animal or bird ingress.
Residual not between 0.2-0.5mg/l
Consumer complaints
Erect new or repair fence.
Cover storage and lock lids.
Trim grass regularly
Clean clogged screens
Replace damaged screens, etc.
Carry out regular &/or documented inspections.
Rechlorinate: increase chlorine (see below*)
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ChecklistsChecklists
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HOLDING RESERVOIR CHECKLISTHOLDING RESERVOIR CHECKLISTMonth: _____________
ConditionProtection
Satisfactory RequiresImprovement
Repairs/ Replacement
Works Necessary
Corrective Action To Be Taken? Give Details
Clear of Debris/Plant Growth
Pest & Vermin Proof
Secure/Locks In Place
Public/ Animal Access DeniedFencingWallsSigns
Structure
Concrete Structure
Presence of Algae/Scum
Res. Covering
Checked By: Date
Verified By: Date
Office Use:
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CHLORINE RESIDUAL CHLORINE RESIDUAL CHECKLISTCHECKLIST
Week Commencing: ___/___/08Week Commencing: ___/___/08
MON TUES WED THURS FRI SAT SUN
DATE
RESULT TOTAL FREE TOTAL FREE
TOTAL FREE
TOTAL FREE
TOTAL FREE
TOTAL FREE TOTAL FREE
Mg/l
SAMPLE POINT
WEEKLYAVERAGE
TOTAL: mg/l FREE: mg/l
OPERATORSIGNATURE:________________________________
DATE: ___/___/08
OFFICE USE
Verified by:___________________________Date:___/___/08
Notes
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Key to success of Key to success of strategystrategy
Collation of dataCollation of data
Analysis of resultsAnalysis of results
Review by committeeReview by committee
Implementation of follow-up actions, Implementation of follow-up actions, where requiredwhere required
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Identifying potential Identifying potential hazardshazards
Committee knowledge essentialCommittee knowledge essential
Consider each stage of water distribution from Consider each stage of water distribution from source to tap … and what might go wrong.source to tap … and what might go wrong.
Agree to implement relevant control options Agree to implement relevant control options (including regular monitoring) that will minimise (including regular monitoring) that will minimise risk.risk.
Consider how & when implementation will be Consider how & when implementation will be achievedachieved
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Know your SourceKnow your Source Gather historical analysisGather historical analysis
Local Authority/EPA samplingLocal Authority/EPA sampling Pre-DBO monitoringPre-DBO monitoring Scheme’s own analysisScheme’s own analysis
Map hydrologyMap hydrology Surface waterSurface water Groundwater Groundwater EPA/GSI websiteEPA/GSI website
Establish raw water baselineEstablish raw water baseline Minimum standard to be achievedMinimum standard to be achieved Drivers for improvementDrivers for improvement
Environmental/Water Framework DirectiveEnvironmental/Water Framework Directive EconomicEconomic
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Implementing QA at Implementing QA at source source
Kilmaley/Inagh, County Clare Kilmaley/Inagh, County Clare
Tullyallen, County Louth Tullyallen, County Louth
Corduff/Corracharra, County Corduff/Corracharra, County MonaghanMonaghan
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Water treatmentWater treatment
A significant challenge for many A significant challenge for many schemesschemes
Mainly disinfection only … butMainly disinfection only … but Increasingly additional treatment in Increasingly additional treatment in
view of Crypto risk assessmentsview of Crypto risk assessments A handful with sand filtration alsoA handful with sand filtration also Major area of responsibilityMajor area of responsibility
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ReservoirReservoir
Many schemes have storage Many schemes have storage reservoirs both for raw water & reservoirs both for raw water & treated watertreated water
In most DBO projects the Contractor In most DBO projects the Contractor is responsible for theseis responsible for these
Whether directly responsible or not, Whether directly responsible or not, group schemes should ensure group schemes should ensure quality control is maintainedquality control is maintained
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Distribution networkDistribution network
The QA system addresses The QA system addresses three distinct areas in the three distinct areas in the distribution network.distribution network.
1.1. Mapping the networkMapping the network2.2. Line maintenance to prevent Line maintenance to prevent
recontaminationrecontamination3.3. Water conservationWater conservation
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Implementing QA on the Implementing QA on the Distribution NetworkDistribution Network
Truagh GWS, County MonaghanTruagh GWS, County Monaghan
Benbulben GWS, County SligoBenbulben GWS, County Sligo
Glaslough/Tyholland GWS, Co. Glaslough/Tyholland GWS, Co. MonaghanMonaghan
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Implementing QA at the Implementing QA at the consumer’s tapconsumer’s tap
Kilmaley/Inagh GWS, Co. ClareKilmaley/Inagh GWS, Co. Clare Tydavnet GWS, Co. MonaghanTydavnet GWS, Co. Monaghan Magheracloone GWS, Co. MonaghanMagheracloone GWS, Co. Monaghan
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Raw water colour
020406080
100120
Aug-07
Sep-07
Oct-07
Nov-07
Dec-07
Jan-08
Feb-08
Mar-08
Apr-08
May-08
Jun-08
Jul-08 Aug-08
Month
Haze
n unit
s
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Where are we at?Where are we at?
To date, 45 schemes have completed To date, 45 schemes have completed QA training across 11 counties.QA training across 11 counties.
We encourage all committee We encourage all committee members and staff to attend, but not members and staff to attend, but not always possible.always possible.
Time and venue of trainingTime and venue of training Evolving courseEvolving course Follow-upFollow-up
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BenefitsBenefits
QA will provide effective security for your QA will provide effective security for your water supplywater supply
QA will help schemes meet requirements of QA will help schemes meet requirements of RegulationsRegulations
QA will assist schemes in becoming a QA will assist schemes in becoming a licensed providerlicensed provider
QA will address the issue of public confidenceQA will address the issue of public confidence
QA QA isis a condition of subsidy a condition of subsidy
Water Services National Training Group and
National Federation of Group Water Schemes
7th Annual Rural Water Services Conference
18th September 2008