1. Water Loss BMP Revision Jim Metropulos Andrew Chastain-Howley

2. BMP 1.2 Proposal Highlights Goal is improvement measured by reduction in water loss per connection Benchmarking exercise in fifth year to determine a specific ‘meet or exceed’ water loss target

3. BMP 1.2 A.Implementation Standard Water Balance Validation (4 years) - Using Data Grading Economic Values Component Analysis Interventions - to Reduce Losses (M36) Customer Leak Policy

4. BMP 1.2 B. Implementation Agencies with MOU before Dec 31, 2008 –Implement Before July 1, 2009 Others –Implement by one year after signing MOU Benchmark Water Loss PI’s (after first 4 years of data)

5. BMP 1.2 C. Coverage Requirements Audit Using AWWA Software. Test source and production meters Improve data accuracy to level IV using software grading. Seek Training Years 5 to 10 - Show progress in water loss control Repair all reported leaks and breaks Proactively search and repair unreported leaks

6. IWA/AWWA Water Audit Method: Water Balance Water Imported Own Sources Total System Input ( allow for known errors ) Total System Input (allow for known errors) Water Supplied Water Exported Water Supplied Water Exported Water Losses Authorized Consumption Water Losses Authorized Consumption Real Losses Apparent Losses Unbilled Authorized Consumption Billed Authorized Consumption Non- Revenue Water Revenue Water Leakage & Overflows at Storage Billed Unmetered Consumption Billed Metered Consumption Billed Water Exported Leakage on Service Lines Leakage on Mains Customer Metering Inaccuracies Unauthorized Consumption Unbilled Unmetered Consumption Unbilled Metered Consumption Systematic Data Handling Error

7. AWWA Water Loss Control History IWA WLTF water audit method published 2000 AWWA WLCC Committee Report: Journal AWWA August 2003 M36 Manual rewrite launched – DSS, Sept. 2003 April 2006 First commercial version of software 2.0 August 2007 Second version of software 3.0 April 2009, M36 Third Edition Published May 2009, Software Version 4.0 Published – data grading capability is a significant enhancement

8. AWWA Free Water Audit Software® What motivated the AWWA WLCC to create software? Most utilities need something to assist starting and standardizing a water audit. Interest in water loss assessment is on the rise Reduce the learning curve with respect to the new methodology. Allow more standardization of data collection and analysis. Version 4.0 –allows labeling the “quality” of the data

9. Going Beyond Percentages Three levels beyond the % structure First Level Wholesale Import and Export Billed, Unbilled, Metered and Unmetered Apparent loss and Real loss

10. Going Beyond Percentages Second Level Unauthorized Consumption Meter Inaccuracies Billing System Ewrors Leakage Overflows

11. Going Beyond Percentages Third Level Financial Losses Breakdown Performance Indicators Data Grading / Initial Validation

12. Using the Software is only the Beginning Additional Levels (examples) Losses sectorized by infrastructure (Hydrant, main, service line, valves, etc.) Meter sizes and variations in inaccuracy Create District Sectors

13. FAQ’s How do we estimate unauthorized consumption, or unbilled unmetered consumption? Studies have been conducted on these variables and defaults have been created for those completing the software for the first time. Use the default then review the M36 manual to gain more insight How valid are the numbers? To help answer this question we developed a basic data grading capability to analyze all the data inputs and give an overall grade for the data

14. AWWA Free Water Audit Software® A few people to credit…. David Sayers, Delaware River Basin Commission – main software developer George Kunkel, Philadelphia Water Department Andrew Chastain-Howley, Miya David Goff, Goff Water Audits and Engineering Alain Lalonde, Veritec Over 30 beta test utilities

15. Instructions Worksheet

16. Examples Examples which show two completed water audits are embedded into the body of the spreadsheet: –The City of Philadelphia (US) audit shows units of million gallons (US) –The Region of Peel (Canada) shows units of thousand cubic meters.

17. Reporting Worksheet

19. Definition Information Average Length of Customer Service Lines

20. Component Analysis for Apparent Loss Control

21. Component Analysis for Real Loss (Leakage) Control

22. Send your comments and questions to: org WLC@awwa. org

23. BMP 1.2 A.Implementation Standard Water Balance Validation (4 years) - Using Data Grading Economic Values Component Analysis Interventions - to Reduce Losses (M36) Customer Leak Policy

24. BMP 1.2 B. Implementation Agencies with MOU before Dec 31, 2008 –Implement Before July 1, 2009 Others –Implement by one year after signing MOU Benchmark Water Loss PI’s (after first 4 years of data)

25. BMP 1.2 C. Coverage Requirements Audit Using AWWA Software. Test source and production meters Improve data accuracy to level IV using software grading. Seek Training Years 5 to 10 - Show progress in water loss control Repair all reported leaks and breaks Proactively search and repair unreported leaks

26. BMP 1.2 D. Requirements for Documenting BMP Implemention Submit BMP every reporting cycle