Cork County Water Conservation Programme

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Cork County Water Conservation Programme Water
Conservation in Business Presented by Eoghan
OBrien WSIP Siobhán Mac Mahon WSIP
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National Water Conservation Programme

• What is it?
• Reducing Unaccounted For Water (UFW) from 47 to
  25

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National Water Conservation Programme

• Other Objectives
• Increase efficiency in OM of our water schemes
• Increase knowledge of our networks (via GIS
  systems, computer modelling) and consumption
  patterns (via metering)
• Value for money by deferring capital expenditure
  on new water supply schemes through improved
  supply and reduced consumption
• Environmental protection by deferring new water
  sources
• Improve supply service to our consumers
• PR of the need for water conservation.

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3 Stages of Water Conservation

• Stage 1 - Implementation of Network Management
  Systems
• Asset data collection
• Mapping (CIS)
• District metered areas (DMA), telemetry systems,
  pressure controls
• Hydraulic modelling
• Cork County Council is currently in Stage 1
• Stage 2 - Active Leakage Control
• Location and repair of leaks
• Prioritised basis (target with DMA systems)
• Initial Exchequer funding, then Local Authority
  resources
• Only passive leakage detection to date.
• Stage 3 Mains Rehabilitation
• Follows on from Stages 1 and 2
• Identifies DMAs with persistent high leakage,
  poor response to repair activities and level of
  service problems.
• Targeted investment on sections for best return

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Water Conservation - Government Funding
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Cork County Council - Scope of Service

• County
• 170,000 m3/day
• 4500km main
• 170 Public Schemes
• 134,000 Properties

• East Cork
• 47,000 m3 /day (28)
• 635km main (14)
• 23 Public Schemes
• 28,000 Properties (21)

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Stage 1 - DMA Design e.g. Cobh Midleton
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Leakage Map Records
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Leakage Database Detection Teams
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CIS survey records / Hydraulic Models
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East Cork Public Water Supply Schemes
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2009 Service Indicators - Water Audit East Cork
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2009 Service Indicators - Water Audit
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Leakage Control And Network Management
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Types of Leaks

• Reservoirs, Water towers, Tanks etc.
• Mains Cracks, splits, holes
• Services Communication, supply
• Fittings Valves, hydrants, stop taps
• AWWA M36 manual (1999) average life of an
  underground leak is 2 years. (depends on the leak
  detection policy, pipe material, construction,
  etc.)

Types and causes of leakage
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Causes of Leaks

• Increased pressure (repairs/network changes)
• Ground movement
• Break down in materials (corrosion)
• Poor quality materials/installation
• Cyclic stresses (PRV/Pumps)
• Valve operations (surges/water hammer)
• Traffic
• Age of mains and services

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Leak Type Statistics

• Supply side 34
• Consumer side 24
• Mains 25
• Other 17

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Reported and Unreported Leaks
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Active and Passive Leakage Control
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Active Leakage Detection Stage 2

• The only way forward
• Ongoing funding required
• Full-time dedicated teams
• Team need long-term support
• Resources need to be committed for the long-term
• Training very important
• Water Conservation is never ending

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Water Loss Management Structures

• Integrated Approach is required to efficiently
  reduce Water Loss Cooperation is critical

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How do we get there?
- Phased approach
- Focus existing resources on core activities
Up to END 2010
WSIP
Operations
Procure and Manage Network Management Systems
Contracts
Re-establish Technical teams
Area offices to collect data
2010-2012
DMA Telemetry Systems
Active Leakage Control (2 teams)
Hydraulic Models Pressure Mgt
DMA Establishement
Data Management Package
Network Management
Post 2012
Full Active Leakage Control (14 Teams)
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Cost Of Water

• Water Wastewater Charges

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Water Conservation Booklets