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Sligo Water Conservation Presentation on 11 th of December 2009. Noel Haran Acting Senior Executive Engineer Water Services. Public Water Supplies (PWS) in County Sligo North Sligo PWS Lough Easkey PWS Lough Talt PWS South Sligo PWS Kilaraght PWS Riverstown PWS
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Sligo Water Conservation Presentation on 11th of December 2009 Noel Haran Acting Senior Executive Engineer Water Services
Public Water Supplies (PWS) in County Sligo • North Sligo PWS • Lough Easkey PWS • Lough Talt PWS • South Sligo PWS • Kilaraght PWS • Riverstown PWS • Lough Gill (Cairns Hill)PWS • Lough Gill (Foxes Den) PWS • Kilsellagh PWS North Sligo Water Supply Area Kilsellagh Water Supply Area Lough Gill Water Supply Area Lough Easkey Water Supply Area Riverstown Water Supply Area Lough Talt Water Supply Area Combined Total Usage of 11,442,632 m3/Year ( estimate 2009 ) (2,517,379,040 gal/Year) South Sligo Water Supply Area Kilaraght Water Supply Area
Sligo Water Conservation & Network Management Project This project is a three stage process which was funded by DEHLG (Department of Environment, Heritage and Local Government) & now funded by Sligo County Council. • Stage 1 - Implementation of Water Management Systems • Data collection & mapping, Network metering, Telemetry & Hydraulic Modelling now substantially complete. • Stage 2 - Active Leakage Control • Leak Detection and Repair ongoing. • Stage 3 – Mains Rehabilitation • Replacement of poorly performing mains.
Stage 2 - Active Leakage Control • Leak Detection and Repair ongoing. Photo 1 Photo 2 Step Testing Equipment for Identifying leaks within DMA’s (District Metering Area ) Photo 4 Photo 3 Sounding equipment used for finding individual leaks Correlation equipment used for finding mains leaks
Stage 2 - Active Leakage Control • Results
Stage 3 – Mains Rehabilitation • Identify poorly performing mains (Burst Records) • Consolidated Mains Rehabilitation Report for Sligo was submitted to Department Dec 2008, 11 No. Phases total costs = € 54,832,342. • July 09 approval was received for mains replacement in South Sligo, Total approved = €260,000 • Dec 09 approval has been received for stage 3, phase 1, total approved = € 4,670,667.98 Map 1 Map 2
Definitions – Water Conservation “The minimization of loss or waste, care and protection of water resources and the efficient and effective use of water” Pressure Management• Reduce new breakfrequencies• Reduce real losses • Water Loss Management • Active Leakage Control • Pressure Management • Pipeline and Assets Management • Demand Management Active Leakage Control • DMA Monitoring • Leak detection • Leak Repair Demand Management • Consumer metering • Public awareness • Water efficient fixtures • Water reuse Pipeline and Assets Management • Selection • Installation • Maintenance • Renewal • Replacement
Non Domestic Metering • A total of 6,040 meters have been installed to date. • Non-domestic and part non-domestic customers have been charged on a metered basis since the 1st January, 2006. • Part non-domestic customers get a domestic allowance of 227m3 per annum which is applied on a daily basis. • The charge for water in 2009 is 1.27 per m3 and wastewater is 1.03m3 • Some part non-domestic customers have smaller bills than they had in pre metering , they are not exceeding their domestic allowance. • Consumers now pay for the water they use.
Consumer Side Leakage • What is the current situation regarding Consumer Side Leakage in Ireland? • Typical Figure for Consumer side Leakage assumed by Irish • Water Services Authorities is 60 l/prop/day. • Based on data collected from Water Services Authorities on leak • repairs; • • 19% of all leaks found were on the consumer side off the boundary box. • • 9% of all leaks found were in private developments. • GWS Case Study of 22 GWSs in Galway & Mayo • Full consumer metering • Proportion of UFW • Consumer Side – 55% • Distribution Side – 45%
Dealing with Consumer side leakage– the legislation • Waste Notices • Legislation • Water Services Act 2007 (Section 56) • Water Conservation Regulations 2008 • Water Service Authority Powers • Corrective Action • Limit Consumption • Emergency Notice • Restrict or cut-off supply • Prohibit or restrict certain use
Education / Information Local Authority Publicity Campaigns • Leaflets • Radio Adverts • Websites www.taptips.ie www.greenbusiness.ie External Initiatives • Schools - Green Schools Programme • Business Representative Groups - IBEC
Leaflets Sligo Water Conservation Awareness Campaign Information Booklets provided free by Sligo County Council
Economic benefit to consumer when reducing water wastage €1.50 / Yr €32.85 / Yr €116.80 / Yr €359.53 / Yr €1277.50 / Yr A leaking ball-valve in a water trough can waste up to 150 m3 of water per year = €190.50 / Yr
Sligo Farm • Initial 30m3/d • 1 leak repaired • Saving 28.9m3/d • Saving €13,379 • Sligo Hotel • Initial – 98m3/d • 1 leak repaired • Saving 74m3/d • Saving €34,144
Water Saving Alternatives • Average daily usage figures from the National Water Study: Rainwater Harvesting It should be noted that rainwater may contain ‘E.coli & Coliform Bacteria, there is no hygenic risk when using rainwater for flushing of toilets & garden use, washing yards.
Conclusions Leak examples have demonstrated significant potential for consumer side savings • Demand Management Tools • Education • Enforcement • Water Charging The next Steps? • Universal metering • Regulation – water saving devices • Grey water recycling • Rainwater Harvesting