Mr. Tim Lucey, Cork City Manager. Format of Presentation: G eneral Overview Providing an Efficient Infrastructure for the Supply and Disposal of Water.

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