IWA Water Loss 2010 São Paulo, Brasil

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1 Daily and Real Time Monitoring of Non Revenue Water Joaquim Poças Martins IWA Water Loss 2010 São Paulo, Brasil

2 Malcolm l Farley s Blue Skies Pannel (London, 2010) The best future water supply systems: Will not leak (Dennis Dellow) Will last for more than one hundred years Wll be monitored/controlled in real time Will have full AMR Estimating the ELL and defining a strategy to reach it JPM IWA Water Loss 2010 S.Paulo 2

3 Are we solving the wrong problem?

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5 This system: Will leak It will be difficult to know when/where it is leaking Will not last 100 years but it is cheaper, faster and easier e to buiild it this way (in the short run) JPM IWA Water Loss 2010 S.Paulo 5

6 PORTO JPM IWA Water Loss 2010 S.Paulo 6

7 Change Management

8 AGUAS DO PORTO (400,000 ep) October 2006 May 2009 System Input Volume (m3/day) Revenue Water (m3/day) 104,000 69,000 48,000 48,000 Non-Revenue Water (%) Non-Revenue Water (m3/day) Functions 54% 56,000 Water Supply + Sewerage+ Wastewater Treatment 30% (with very little investment) 22,000 (savings of M 4.0 /year, 10% of the annual turnover) Water Supply + Sewerage+ Wastewater Treatment+ Stormwater + Stream Rehabilitation+ Beaches Tariff Increases n.a. 0% in 2007, 2.75% in 2008, 1% in 2009 Number of Workers Net results JPM - M IWA 3.5 Water Loss M 1.0 (Loss) S.Paulo (Profit) 8

9 Water Loss Halved in 8 Months JPM IWA Water Loss 2010 S.Paulo 9

10 Minimum Night Flow JPM IWA Water Loss 2010 S.Paulo 10

11 Reduction of Water Loss m3/year SIV NRW RW Time JPM IWA Water Loss 2010 S.Paulo 11

12 Reduction of NRW Impact on the Annual Results SIV i RW (m 3 /d) + RW i nx /m 3 RW f 0 SIV (m 3 /d) X /m 3 SIV f +Y /year - JPM IWA Water Loss 2010 S.Paulo 12

13 Alternative Paths to Reduce Non-Revenue Water and the Respective Impact on the Annual Results System Input Volume (m 3 /day) Revenue Water (m 3 /day) % % 35% 31% % % % 15% JPM IWA Water Loss 2010 S.Paulo 13

14 IWA Standard Water Balance System Input Volume Authorized Consumption Water Losses Billed Authorized Consumption Unbilled Authorized Consumption Apparent (commercial) Losses Real (physical) Losses Billed Metered Consumption Billed Unmetered Consumption Unbilled Metered Consumption Unbilled Unmetered Consumption Unauthorized Consumption Customer Meter Inaccuracies and Data Handling Errors Leakage on Transmission and Distribution Mains Leakage and Overflows at Storage Tanks Leakage on Service Connections up to point of Customer Meter Revenue Water Non Revenue Water JPM IWA Water Loss 2010 S.Paulo 14

15 Reduction of Water Loss BILL Authorized Consumption System Input Volume Water Losses REDUCE Billed Authorized Consumption Unbilled Authorized Consumption Apparent (commercial) Losses Real (physical) Losses Billed Metered Consumption Billed Unmetered Consumption Unbilled Metered Consumption Unbilled Unmetered Consumption Unauthorized Consumption Customer Meter Inaccuracies and Data Handling Errors Leakage on Transmission and Distribution Mains Leakage and Overflows at Storage Tanks B B T M Leakage on Service Connections up to point of Customer Meter RR 4 R Revenue Water Non Revenue Water JPM IWA Water Loss 2010 S.Paulo 15

16 Strategy for Real Losses Reduction PRESSURE MANAGEMENT UNAVOIDABLE SPEED AND QUALITY OF REPAIRS RECOVERABLE ACTIVE LEAKAGE CONTROL PIPELINE AND ASSETS MANAGEMENT: RENEWAL, REPLACEMENT JPM IWA Water Loss 2010 S.Paulo 16

17 Strategy for Apparent Losses Reduction CUSTOMER METER INACCURACY UNAVOIDABLE UNAUTHORIZED CONSUMPTION (THEFT) RECOVERABLE DATA TRANSFER ERRORS DATA ANALYSIS ERRORS JPM IWA Water Loss 2010 S.Paulo 17

18 Priority Measures 1. IWA Water Balance 2. Repair all visible leaks 3. Universal billing/metering 4. Control room 5. Monitoring and telemetry 6. Pressure control 7. Active leakage control teams 8. Fast repair teams JPM IWA Water Loss 2010 S.Paulo 18

19 Measures Types of water loss Measures 1 Measures 2 Measures 3 Measures 4 (from Water Balance) Water loss in pipes (leaks and bursts) Pressure control Fast repair of Active Leakage Replacement leaks and bursts Control of pipes Water loss in connections (leaks and bursts) Pressure control Fast repair of leaks and bursts Active Leakage Control Replacement of pipes Water loss in storage tanks Detect and prevent overflows Repair of water tanks Water loss due to metering errors (old Local Inspection of Replacement of meters) meters meters Water loss due to unauthorized consumption (theft) Water loss due to unbilled, unmetered consumptions (watering public gardens, street washing, ) Local Inspection Installation of meters and bill Water loss due to unbilled, metered consumption (free water) Bill JPM IWA Water Loss 2010 S.Paulo 19

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21 Reduction of Water Losses Accumulated Savings m3/d Years Real losses Apparent Losses NRW Years Real Losses Apparent losses NRW SIV and RW ( /year) Savings due to the reduction of NRW /year Years SIV - System Input Volume RW - Revenue water Years Real losses Apparent Losses NRW JPM IWA Water Loss 2010 S.Paulo 21

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26 Case study Aldoar 400 Clients with AMR JPM IWA Water Loss 2010 S.Paulo 26

27 Leakage Control DMA Flow variation (m 3 /hour) Max, Average and Min burst burst JPM IWA Water Loss 2010 S.Paulo 27

28 Real time monitoring of SIV and RW RW Totalizer SIV Consumption : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : :00 JPM IWA Water Loss 2010 S.Paulo 28

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39 Our ancestors installed pipes that lasted over 100 years How long will last the ones we are installing now? JPM IWA Water Loss 2010 S.Paulo 39

40 Replacement of Victorian water mains JPM IWA Water Loss 2010 S.Paulo 40

41 Replacement of pipes p JPM IWA Water Loss 2010 S.Paulo 41

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43 Trenchless pipe replacement Relining JPM IWA Water Loss 2010 S.Paulo 43

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45 The best water supply systems: Will not leak Will last for more than one hundred d years Full AMR, monitored in real time, meters with no moving parts, lasting much longer All the water measured and billed but we still will have to live with many sub- optimal ones, for many years, in many parts of the world JPM IWA Water Loss 2010 S.Paulo 45

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