Presentation to Oireachtas Joint Committee on Environment, Transport, Culture and the Gaeltacht 27 th September 2011 Mr. Tim Lucey, Cork City Manager
Mar 31, 2015
Presentation to Oireachtas Joint Committee on Environment, Transport, Culture and the Gaeltacht
27th September 2011
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 = 119,000Average household occupancy = 2.6Number of households = 55,311Domestic demand per property = 390 litres
per day
Average Daily domestic demand = 21.57 million litres
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%)
Potable Water – Non-Domestic
Supply & Storage of Water for Cork City
WastewaterCollection from the City and contiguous
County areasSecondary Treatment at Carrigrennan, Little
Island78 million litres per day from City22 million litres per day from CountyDesign 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’sCork 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 – €17.5mNetwork Rising Mains to Reservoirs - €1.9mCity/County network Interconnector – €2.9mDocklands Water Supply Scheme - €5.6mSt. Patrick’s Street Culvert - €0.5mWatermain Rehabilitation Stage 1 - €12.6mElimination 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
10.0
17.7
20.3 21.023.2 24.1 23.4
22.3 22.1
-
5.00
10.00
15.00
20.00
25.00
30.00
2003 2004 2005 2006 2007 2008 2009 2010 2011
Water
Drainage
Total
Unit Composite Water Rates 2003-2011
0.80
2.30 2.30 2.30 2.30 2.30 2.35 2.35 2.35
-
0.50
1.00
1.50
2.00
2.50
2003 2004 2005 2006 2007 2008 2009 2010 2011
Water
Cost of Supply & Disposal of Water
€0.97€1.09
€0.29
€2.35
0
0.5
1
1.5
2
2.5
Potable Water Waste Water Marginal Capital Cost Contribution
Total