Session 6.2 Brad Astrup - Water Summit · Presented by: Brad Astrup Background Most Metro’s in SA...
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2016/08/25 1 Presented by: Brad Astrup Background Background Most Metro’s in SA experience high levels of UAW / NRW. Some metros in Gauteng are as high as 40% What portion of Revenue Water is lost to consumer leakage? Consumer leakage places additional strain on Water resources Consumer leakage creates revenue for WSP but at what cost? Most Metro’s in SA experience high levels of UAW / NRW. Some metros in Gauteng are as high as 40% What portion of Revenue Water is lost to consumer leakage? Consumer leakage places additional strain on Water resources Consumer leakage creates revenue for WSP but at what cost? Determining Leakage at End Users Determining Leakage at End Users Ensure all consumer supplies are metered Monitor / Log the flow profile through consumer meters Analyse the Base Flow (non production flow) High Base Flow = High Leakage Ensure all consumer supplies are metered Monitor / Log the flow profile through consumer meters Analyse the Base Flow (non production flow) High Base Flow = High Leakage Identify All consumer Supplies Identify All consumer Supplies Flow Logger Installations Flow Logger Installations Food Producer Food Producer
Transcript of Session 6.2 Brad Astrup - Water Summit · Presented by: Brad Astrup Background Most Metro’s in SA...
2016/08/25
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Presented by: Brad Astrup
BackgroundBackground
Most Metro’s in SA experience high levels of UAW / NRW.
Some metros in Gauteng are as high as 40%
What portion of Revenue Water is lost to consumer leakage?
Consumer leakage places additional strain on Water resources
Consumer leakage creates revenue for WSP but at what cost?
Most Metro’s in SA experience high levels of UAW / NRW.
Some metros in Gauteng are as high as 40%
What portion of Revenue Water is lost to consumer leakage?
Consumer leakage places additional strain on Water resources
Consumer leakage creates revenue for WSP but at what cost?
Determining Leakage at End UsersDetermining Leakage at End Users
Ensure all consumer supplies are metered
Monitor / Log the flow profile through consumer meters
Analyse the Base Flow (non production flow)
High Base Flow = High Leakage
Ensure all consumer supplies are metered
Monitor / Log the flow profile through consumer meters
Analyse the Base Flow (non production flow)
High Base Flow = High Leakage
Identify All consumer SuppliesIdentify All consumer Supplies
Flow Logger InstallationsFlow Logger Installations Food ProducerFood Producer
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Food Producer – Logging ResultsFood Producer – Logging Results
Leakage is Negligible
Base Flow = 0.4m³/h
BF / Average = 7%
Residential FlatsResidential Flats
Residential Flats - Logging ResultsResidential Flats - Logging Results
Leakage
Base Flow = 0.25m³/h
BF / Average = 61%
Food ProducerFood Producer
Food Producer – Logging ResultsFood Producer – Logging Results
Base Flow = 3.7 m³/h
BF / Average = 54%
Engineering ManufacturerEngineering Manufacturer
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Manufacturer - Logging ResultsManufacturer - Logging Results
Leakage
Base Flow = 80m³/h
BF / Average = 89%
Manufacturer - Daily ConsumptionManufacturer - Daily Consumption
Leakage
Large Consumer - Leakage AnalysisLarge Consumer - Leakage Analysis
Leakage = 1 920m³/day
Leakage = 58 400m³/month
Leakage = 700 800m³ / year
Leakage = 1 920m³/day
Leakage = 58 400m³/month
Leakage = 700 800m³ / year
Cost of LeakageCost of Leakage
Metro Purchases Water from RW @ R7.60/m³- Leak = 700 800 x R7,60 = R 5 326 080 / annum
Consumer Purchase from Metro @ R17,36/m³- Leak = 700 800 x R17,36 = R 12 165 888 / annum
Metro Generates a profit of R6 839 808 / annum as a result of this leakage!!!
This leakage reflects as revenue water on the Metro water balance
Metro Purchases Water from RW @ R7.60/m³- Leak = 700 800 x R7,60 = R 5 326 080 / annum
Consumer Purchase from Metro @ R17,36/m³- Leak = 700 800 x R17,36 = R 12 165 888 / annum
Metro Generates a profit of R6 839 808 / annum as a result of this leakage!!!
This leakage reflects as revenue water on the Metro water balance
Dealing with the LeakageDealing with the Leakage
As the Country is water stressed and DWA is implementing restrictions, Metros & Consumers must act to reduce this leakage.
Metros need to forgo this additional income by requesting consumers to repair leakage
Leakage is unsustainable for the consumer
As the Country is water stressed and DWA is implementing restrictions, Metros & Consumers must act to reduce this leakage.
Metros need to forgo this additional income by requesting consumers to repair leakage
Leakage is unsustainable for the consumer
Metros ResponsibilityMetros Responsibility
Ensure all supplies are metered
Ensure consumer receives and pays for water usage
Monitor flow to Large Consumers
Inform Consumer of Leakage (Formal Letter)
Pressurise consumers to repair leakage
Ensure all supplies are metered
Ensure consumer receives and pays for water usage
Monitor flow to Large Consumers
Inform Consumer of Leakage (Formal Letter)
Pressurise consumers to repair leakage
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Unmetered Connection LeakageUnmetered Connection LeakageConsumer ResponsibilityConsumer Responsibility
Pay for water consumed on the property
Monitor flow to the property
Understand level of leakage on the property
Address leakage on the Property
Pay for water consumed on the property
Monitor flow to the property
Understand level of leakage on the property
Address leakage on the Property
Flow Monitoring & Leakage RepairFlow Monitoring & Leakage Repair Consumption Monitoring & Leakage RepairConsumption Monitoring & Leakage Repair
Permanently Monitoring Flow – School Leak DevelopmentPermanently Monitoring Flow – School Leak Development
Establish Night Flow AlarmsEstablish Night Flow Alarms
MNF Alarm Condition
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Establish Night Flow AlarmsEstablish Night Flow Alarms
MNF Alarm Condition
Establish Night Flow AlarmsEstablish Night Flow Alarms
MNF Alarm Condition
Establish Night Flow AlarmsEstablish Night Flow Alarms
Leak Repaired
Permanently Monitoring FlowPermanently Monitoring Flow
Pressure Management – Mulberry LanePressure Management – Mulberry Lane Pressure ManagementPressure Management
Burst Pipe Frequency High – 7 Bursts per year
High Night Pressure +90m
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PRV & Check Meter InstallationPRV & Check Meter Installation Pressure ManagementPressure Management
Pressure Reduced 41m
Burst Pipe Frequency 0 Bursts per year
Demand Reduced by 15%
Affect of Pressure Management on DemandAffect of Pressure Management on Demand Entering Into Shared Savings AgreementsEntering Into Shared Savings Agreements
No Cost to Consumer
Service Provider takes the risk of funding intervention and reducing leakage
Service provider only paid a percentage of savings achieved
Savings cap can be negotiated
No Cost to Consumer
Service Provider takes the risk of funding intervention and reducing leakage
Service provider only paid a percentage of savings achieved
Savings cap can be negotiated
Mulberry Lane Water Savings To DateMulberry Lane Water Savings To Date
Month Savings Kℓ Savings (R)
Dec 2015 670 R 7,945.13
Jan 2016 745 R 8,842.93 Feb 2016 218 R 2,582.99
March 2016 696 R 8,258.24
April 2016 148 R 1,750.54
May 2016 665 R 7,890.10
June 2016 847 R10 645,76 July 2016 718 R 9 028,80 Total To Date 4 709 R 56 962,51
ConclusionsConclusions
A significant amount of Revenue Water in SA Metros is supplying leakage
Metros need to meter and bill consumers accurately
Metros need to encourage consumers to repair leakage
Consumers need to act to reduce leakage
Repair of consumer leakage will reduce overall demand
This may increase NRW / UAW in Metros
A significant amount of Revenue Water in SA Metros is supplying leakage
Metros need to meter and bill consumers accurately
Metros need to encourage consumers to repair leakage
Consumers need to act to reduce leakage
Repair of consumer leakage will reduce overall demand
This may increase NRW / UAW in Metros
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- Thank You -- Thank You -
