WSNTG 9th Annual Conference

1
WSNTG 9th Annual Conference

• Water Services Strategic Plans
• Fact or Fiction

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Case Study South Cork Water Supply Strategic
Study

• Jerry Grant, Chartered Engineer, RConsEI
• Managing Director
• RPS Consulting Engineers

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Scheme Boundaries
Scheme Boundaries
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Elements of Integrated Strategy

• Robust Supply / Demand Model for 2003, 2013, 2028
• Supply Deficit Profile
• Demand Management Plan
• Water Conservation Programme
• Asset Management Plan
• Monitoring to Measure Performance/Risk
• Rehabilitation to Manage Failure Risk
• System Capacity Upgrading Needs for stated
  LOS
• Capital Programme (New Capacity)
• Operational Management Plan
• Management Monitoring Processes (Pro-active)
• Economic Implications
• Capex, Opex and Implementation Plan

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Major Schemes Overview

• Cork Harbour City (Lee Inniscarra)
• Residual Capacity can be Exploited
• Cork City (Lee Road)
• Sustainable City Supply Assets at Risk
• Bandon / Innishannon (Bandon River)
• Strategic Schemes SW of City
• Glashaboy, Cobh E. Cork (Local Rivers GW)
• Review Strategic Roles Deficits
• Mallow / Fermoy (Local GW River Schemes)
• Limited yield and backup for Risk
• Clonakilty / Dunmanway
• Need Augmentation for Development / Peaks

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Overall Conclusions

• Immediate Deficits met from Leakage Reduction
• Sustainable Growth to 2028 can be served by
• Realistic Demand Management Programme
• Develop CH C Reserve plus Local Schemes
• Monitor and Maintain Asset Standards
• Storage Capacity Standards matched to supply
  needs
• Operation and Maintenance Systems to integrate
• Production Distribution
• Leakage Demand Management
• Asset Monitoring Management of Risk (Source to
  Tap)
• Customer Services
• Costs Revenues

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Water Strategy Demand Management Principles
Option to Examine Sensitivity on ELL of Including
ES Costs
Consumption Forecasts
Include Existing Resources, Treatment, Headroom
etc
Environmental Social Costs
Supply Options and Costs
ELL and Leakage Targets
DEVELOP LEAST COST MIX OF OPTIONS TO MEET DEMAND
Demand Management Options
Mains Rehab Targets
Active Leakage Control Costs
Source Development Needs
Current Zone Leakage and Growth
Identify Mains Rehab options
Examine Sensitivity of Climate Change Scenarios
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Water Balance Cork County Primary Schemes
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International Benchmarking of Leakage
Leakage Comparisons with UK, Scotland, USA and
Australia
UK Water Only Cork Primary Scheme Leakage UK
Water and Sewerage Companies Cork City Cork
County Primary Schemes USA Water
Companies Australia Water Companies Scottish
Water All Primary Schemes
60

Lee Rd.
50
Glashboy/Cobh
Youghal
40
Fermoy
Leakage (m3/km/day)
Conna Regional
Thames
30
Scottish Water
20
Cloyne/Aghada
Glanmire Regional
10
Clonakilty
0
0.00
10.00
20.00
30.00
40.00
50.00
60.00
70.00
80.00
90.00
L/N (Length between Connections)
Cork County from 18 - 10m3/km/d 15Ml
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Mains Classified by Material - County
CIS Datasets Incomplete for condition data
SOUTHERN AREA
WESTERN AREA
NORTHERN AREA
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Leakage Targets Savings by Admin Area (Baseline
Consumers)

• Potential Savings Demand Management
• Cistern Displacement Hippos 1-2Ml/day
• Regulation of Toilets 2-3Ml/day long term

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Delivering Leakage Targets

• Management / Structure
• Independent Senior Engineer led Organisation
• Divisional Team for Detection / Repair
• Infrastructure Mgt. Systems
• 350 DMAs with Telemetry Reporting
• 16 Teams Equipped Trained
• CIS Completion
• Asset Performance Databases
• Bursts
• Complaints
• Water Quality
• Failures and Shut Downs
• Modelling Pressure Management Set-up
• Mgt. System and Costs Tracking
• Detection Repair Teams Support Staffing
• Promote Leak Reporting Free phone Leak Line

Report Review Performance against Targets
Refine
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Overall Study Area Population
NSS EGS 2 Opt 1
CASP High
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Zonings Exceed NSS
NSS Exceed Zonings
Glounthaune
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Effect of Zoned Residential Provision
Planning Scenario - NSS (inc. all Zonings)
13.5
Forecast Scenario CASP High
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Peaking Factors
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Production Requirements - Primary Schemes

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Effect of Passive Leakage Control
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Overall Demand for Planning Forecast (Ml/d)
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2028 Surplus / Deficits on Expanded Primary
Schemes
Note Surplus/Deficits are based on potential
capacity of existing primary scheme sources
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Youghal Surplus / Deficit 2003 - 2028
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Youghal Supply / Demand Model
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Water Authority Purpose Management Objectives

• The achievement of the highest level of consumer
  satisfaction and service quality in line with the
  prevailing regulatory framework, whilst making
  best use of available resources
• (Faria and Alegre, 1996)

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Performance Indicators

• For Cork Authorities
• Facilitate Better Management
• Allows Monitoring of the effects of Management
  Decisions
• Provides decision support information
• Aids pro-active management reduce fire fighting
• Highlights strengths and weaknesses of schemes
  and assets
• Assists with implementation of a Total Quality
  Management regime
• Facilitates the implementation of benchmarking

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Performance Indicators

• For the DEHLG
• Supports the formulation of policy
• Aids Assessment of investment
• Needs Forecast
• Investment Priorities
• Project Selection
• Follow-up Reporting

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Performance Indicators

• For consumers and pro-active stakeholders
• Quality of Service Measurement
• Appreciation of Service Delivered
• Promote Social Environmental Awareness
• Water Conservation
• Sources Protection

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Proposed LOS

• Water Quality EU National Standards
• Security of Supply
• Resources
• Headroom 5-15 Risk Dependent
• Demand Forecasting
• Annual Review
• 5 yearly major review
• Water Use Restrictions As required
• Network
• Storage 24 hours peak daily demand risk
  assessed
• WTW Capacity Capable Peak Week requirements 10
• Leakage Targets
• Distribution ELL
• Consumer Side Reduce to 40l/p/d Monitor
• Repair Times
• Reported Bursts 90 12 hours
• Detected Bursts - 72 hours
• Emergency Plan In Place

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Proposed LOS

• Consumer Service
• Min 15m Max 50m Pressure
• Flow Fire Standards
• Supply Interruptions
• 12 hours maximum for 99 properties for 10 year
  planning horizon.
• Adequate monitoring / recording for 5 year
  planning horizon.
• Notice of a planned interruption of water supply
  lasting more than Specified duration
• Bursts Target 200/1000km of main/annum
• Complaints Queries Respond within 10 days
• Appointments Policy
• Water Safety Plan (Source to Tap)

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Division of Study Area
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Strategic Modelling Details

• 14 Schemes ( 9 Models)
• 1669 Nodes
• 316km of main
• 1,500 pipe lengths
• 55 reservoirs or tanks
• 39 pump stations
• 500 Site surveys
• Calibration of 113 meters,
• Installation of 7 new meters
• 104 Pressure tappings

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Eastern Region Water Sources
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Eastern Region Secondary Schemes
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Eastern Region Production Requirements
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Recommended Works Cloyne Aghada Whitegate WSS
Northern Area
Central Area
E2-2
E2-2
E2-1
Southern Area
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Overall Capital Programme
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Management Systems

• Asset Register (Up to date CIS)
• Geo referenced asset details
• Event Register - geo referenced time stamped
• Asset failure (bursts etc)
• Complaints
• Sampling Result (WQ, Asset Condition etc)
• Customer Register
• Location
• Consumption History
• Demand Category
• Financial Systems
• Where
• What
• Cost

• Performance Reports
• Water Quality Standards
• Supply / Demand Balance
• Interruptions to Supply
• Pressure to Customers
• Leakage
• Customer Care
• Unit Costs

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Operational Management Plan

• Organisation
• Management Structure Accountable for
• Production Distribution
• Leakage and Demand Management
• Asset Risk Management
• Customer Financial Services
• Personnel Resources
• Dedicated Engineering Support Staff
• Training and Equipment
• Balance In-house and Contract
• Inter-Authority Co-ordination
• Co-ordination Committee for Regional Planning
• Shared Telemetry / GIS Platforms Strategic
  Information
• Co-ordinated Demand Management Approach

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Operational Management Plan

• Procedures
• Water Safety Plan (Source to tap)
• Operations and Maintenance
• Emergency Planning
• Asset Assessment
• DMA Manuals
• Source Protection
• Data Management (Including capture)
• Customer Relations
• Building Control
• Systems
• CIS developed to Asset Management System
• Hydraulic / System Models
• Telemetry Information System
• Regional Asset Monitoring Management
• Plant Management Monitoring (SCADA)
• DMA Monitoring Leakage Reporting
• Financial Management Reporting

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Implementation Issues

• Funding and Procurement Constraints
• Commitment to Demand Management
• Operation Management Plan
• Organisation Issues
• Planning / Statutory Process
• Capex Works
• Lack of Procedures Data Systems
• Support LOS / KPIs
• Inform Capex Spend
• Drive Pro-active Operation

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Overall Summary
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WSNTG 9th Annual Conference

• Water Services Strategic Plans
• Fact or Fiction