Regional Water Leakage Summit 2013 - WRP Drakenstein... · Regional Water Leakage Summit 2013...
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African Water Summit, 2013 Water Demand Management & Conservation Successes Since 2000 Drakenstein Municipality, Andre Kowalewski Session 5.3 Page1 Regional Water Leakage Regional Water Leakage Regional Water Leakage Regional Water Leakage Summit 2013 Summit 2013 Summit 2013 Summit 2013 André Kowalewski 23 August 2013 23 August 2013 23 August 2013 23 August 2013 " A Place of Excellence" " A Place of Excellence" " A Place of Excellence" " A Place of Excellence" Drakenstein Municipality Drakenstein Municipality Drakenstein Municipality Drakenstein Municipality WATER DEMAND MANAGEMENT & CONSERVATION SUCCESSES SINCE 2000 Introduction • Water losses in DM where in excess of 34% /a with a steady growth of 3.5%/annual • During 1999/2000 the CES department took a decision to reduce water losses and conserve water, improve the non- financial/water loses • Drakenstein Municipality Stats & General information − Population of about 255 000 (61 000 Households). − Water demand of 18000Ml/a for Paarl. − Has 650 km of pipes ranging from 50mm Ø to 1000mm Ø. − A total of 28 reservoirs with capacities of 0.8Ml to 100 Ml. − 16 booster pump systems. − Covers a service area of ± 85 km from Simondium to Saron − Bulk water supply of Paarl and Wellington is from Wemmershoek Dam − 2 Dams on Paarl Mountain supplying ±12% of the total demand of Paarl and Wellington. − Gouda and Hermon are dependent on Voëlvlei Dam. − While Bainskloof and Saron’s portable water comes from Witte River and Leeu River respectively. WDM/WCM Interventions • The following Water Demand Management and Conservation interventions where established. − Hydraulic Modeling of water reticulation network for all towns. − Introduction of a five step rising block tariff scheme. − Pressure Management Initiative was implemented. − Metering of all unmetered water connection and metering of all fire fighting water connections. − Increased public awareness and promotion of water saving devices. − Refurbishment/replacement of existing water network. WDM/WCM Interventions Paarl- Pressure Zones
Transcript of Regional Water Leakage Summit 2013 - WRP Drakenstein... · Regional Water Leakage Summit 2013...
African Water Summit, 2013 Water Demand Management & Conservation Successes Since 2000
Drakenstein Municipality, Andre Kowalewski Session 5.3 Page1
Regional Water Leakage Regional Water Leakage Regional Water Leakage Regional Water Leakage Summit 2013Summit 2013Summit 2013Summit 2013
André Kowalewski
23 August 201323 August 201323 August 201323 August 2013
" A Place of Excellence"" A Place of Excellence"" A Place of Excellence"" A Place of Excellence"
Drakenstein MunicipalityDrakenstein MunicipalityDrakenstein MunicipalityDrakenstein Municipality
WATER DEMAND MANAGEMENT & CONSERVATION SUCCESSES
SINCE 2000
Introduction
• Water losses in DM where in excess of 34% /a with a steady growth of 3.5%/annual
• During 1999/2000 the CES department took a decision to reduce water losses and conserve water, improve the non-financial/water loses
• Drakenstein Municipality Stats & General information − Population of about 255 000 (61 000 Households).− Water demand of 18000Ml/a for Paarl.− Has 650 km of pipes ranging from 50mm Ø to 1000mm Ø.− A total of 28 reservoirs with capacities of 0.8Ml to 100 Ml.− 16 booster pump systems. − Covers a service area of ± 85 km from Simondium to Saron− Bulk water supply of Paarl and Wellington is from Wemmershoek Dam− 2 Dams on Paarl Mountain supplying ±12% of the total demand of Paarl
and Wellington. − Gouda and Hermon are dependent on Voëlvlei Dam.− While Bainskloof and Saron’s portable water comes from Witte River
and Leeu River respectively.
WDM/WCM Interventions
• The following Water Demand Management and Conservation interventions where established.
− Hydraulic Modeling of water reticulation network for all towns.
− Introduction of a five step rising block tariff scheme.
− Pressure Management Initiative was implemented.
− Metering of all unmetered water connection and metering of
all fire fighting water connections.
− Increased public awareness and promotion of water saving
devices.
− Refurbishment/replacement of existing water network.
WDM/WCM Interventions Paarl- Pressure Zones
African Water Summit, 2013 Water Demand Management & Conservation Successes Since 2000
Drakenstein Municipality, Andre Kowalewski Session 5.3 Page2
Rising block tariff structure Public Awareness Programmes
Community Posters, Signage, Leaflets and Information in Accounts
Metering of all unmetered connections including parks, gardens and public open
spaces
Promotion of water saving devices during annual Water Week
Refurbishment/Replacement of network infrastructure
African Water Summit, 2013 Water Demand Management & Conservation Successes Since 2000
Drakenstein Municipality, Andre Kowalewski Session 5.3 Page3
Refurbishment/Replacement of network infrastructure Leak Detection /Repair
Pressure Management Pressure Management
Pressure Management Internet based systems
African Water Summit, 2013 Water Demand Management & Conservation Successes Since 2000
Drakenstein Municipality, Andre Kowalewski Session 5.3 Page4
Internet based systems Telemetry System
Results and Successes
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% N
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TIme (Years)
Paarl Non-Revenue Water 1999 - 2013
10.6%
34.8%
11.18%
12.11%
Results and SuccessesSavings of 158 600 Ml from 2000 to 2013
Results and SuccessesSavings of R790 Million from 2000 to 2013
Results and Successes
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Annual Demand (Megalitres)
Years
Paarl Water Demand 1959 - 2013
Total Water Demand
African Water Summit, 2013 Water Demand Management & Conservation Successes Since 2000
Drakenstein Municipality, Andre Kowalewski Session 5.3 Page5
Results and Successes
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Paarl Water Demand 1989 to 2013
Actual Demand
Projected Demand @ 3.5 %
Saving of 158 600 000 000 litres
Saving of R790 Million @ R5/Kl
Results and Successes
Note: Infrastructure Leakage Index (ILI) for Developed Countries = 1 – 2 Excellent (Category A), 2 – 4 Good(Category B), 4 – 8 Poor (Category C) and > 8 – Very Bad (Category D)
Typical Pressure Reducing Valve installation at Paarl
Advanced Pressure Reducing Valve installation at Paarl
New 2Ml Gouda Reservoir valve chamber Bulk Water Infrastructure
African Water Summit, 2013 Water Demand Management & Conservation Successes Since 2000
Drakenstein Municipality, Andre Kowalewski Session 5.3 Page6
Standard Meter InstallationUpgraded Pump Station –
Leliefontein Reservoir, Paarl
New machine room at Meulwater WTW
Refurbishment of PeroldBooster Pump Station
Refurbishment of Ysterbrug Pump Station – 22 August 2013
Refurbishment of L`Ideal Close Booster Pump Station – Valve
Chamber
African Water Summit, 2013 Water Demand Management & Conservation Successes Since 2000
Drakenstein Municipality, Andre Kowalewski Session 5.3 Page7
Challenges
• • Vandalism of Infrastructure.
• • Retaining of skilled personnel.
• • Training of personnel.
• • Funding of projects.
• • Sustainability.
Conclusions
To sustain the Water Demand Management efforts obtained by Drakenstein Municipality the following strategy were followed, namely:
• Proper record keeping of data and information regarding the infrastructure (including flow measurements)
• Historical information of the whole reticulation systems.
• Training for personal and using the correct equipment for all day to day operations
• Refurbish reticulation system using quality materials
• Preventative maintenance program (maintaining of valves, pumps and equipment before it become problem)
• Reduce pipe repair reaction time (attend to water burst pipe incidents, i.e. 1 hour of less)
• Keep to the basic.
Acknowledgements
• Mr. S Nkonyane D le Roux & Hein Henning from Drakenstein Municipality.
• Drakenstein Municipality Council who approved, supported and financed the Pressure management part of the WDMS.
• Raymond Vermeulen (4Watersupplies) for his advice & input in the installation and maintenance of the PRVs and Controllers.
• Jaco Human from Worley Parsons for statistical information.
Thank You
