Cork Presentation

Report
Mr. Tim Lucey,
Cork City Manager
Format of Presentation:

General Overview

Providing an Efficient Infrastructure for the
Supply and Disposal of Water
Alternatives Sources of Supply, Storage and
Disposal of Water
Administration and Cost of the Supply and
Disposal of Water


Potable Water – Domestic
Demographics:
 Domestic Population served = 119,000
 Average household occupancy = 2.6
 Number of households = 55,311
 Domestic demand per property = 390 litres per day
 Average Daily domestic demand = 21.57 million
litres
Potable Water – Non-Domestic
 Non- Domestic demand = 11.4 million litres
 Total daily demand (Accounted for Water),
i.e. domestic & non-domestic = 32.97 million litres
 Average daily volume of water supplied to Cork
City plus contiguous areas = 67.8 million litres
 Unaccounted for Water (UFW) = 34.83 million
litres (51%)
Supply & Storage of Water for Cork City
Wastewater
 Collection from the City and contiguous County areas
 Secondary Treatment at Carrigrennan, Little Island
 78 million litres per day from City
 22 million litres per day from County
 Design capacity of Treatment Plant 413,000 p.e.
 Current loading – 310,000 p.e.
 54% of load is non-domestic
Cork Drainage Catchment
Carrigrennan
Water Service Investment Programme
Works Completed to-date
 City Watermain Network Replacement programme in
conjunction with Cork Main Drainage works – €9m
(€4.7m recouped from DOECLG)
 City divided into 47 District Meter Areas (DMA’s)
 UFW varies from 22% to 64% in DMA’s
 Cork Main Drainage scheme – €340 million
District Meter Areas
Water Replacement &
Rehabilitation Study Proposals:
 Creation of District Meter Areas
 Update Hydraulic Model and GIS
 Develop system for condition and performance grading
of individual mains
 Prioritisation of DMA’s for Watermain rehabilitation
and/or replacement
Rehabilitation Study:
-
20 DMA’s and 28 high priority trunk mains
requiring significant replacement/rehabilitation
Daily saving of 15.5 million litres of potable water
at present being lost through the network
Reduced production and network maintenance
costs
Reduction in unaccounted for water levels to 28%
Reduction in callouts for leaks to watermains
Reduced pressure to acceptable levels across all
DMA’s
Water Service Investment Programme
Contracts listed to Start by 2012
 Lee Road New Waterworks – €17.5m
 Network Rising Mains to Reservoirs - €1.9m
 City/County network Interconnector – €2.9m
 Docklands Water Supply Scheme - €5.6m
 St. Patrick’s Street Culvert - €0.5m
 Watermain Rehabilitation Stage 1 - €12.6m
 Elimination of Backyard Services - €2.75m
Alternative Sources of Supply, Storage &
Disposal
 Sustainable Urban Drainage Systems (SUDS)
 Groundwater Resources
 City/County Interconnector
 Infiltration
Water Services Costs 2003-2011
30.00
25.00
23.2
20.3
20.00
21.0
24.1
23.4
22.3
22.1
17.7
Water
15.00
10.00
Drainage
10.0
5.00
2003 2004 2005 2006 2007 2008 2009 2010 2011
Total
Unit Composite Water Rates 2003-2011
Water
2.50
2.30
2.30
2.30
2.30
2.30
2004
2005
2006
2007
2008
2.35
2.35
2.35
2009
2010
2011
2.00
1.50
1.00
0.80
0.50
2003
Cost of Supply & Disposal of Water
2.5
€2.35
2
1.5
1
€0.97
€1.09
0.5
€0.29
0
Potable Water
Waste Water
Marginal Capital
Cost Contribution
Total

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