Implementing SB 555: Validated Water Loss Audits and Reporting

Transcription

1 Implementing SB 555: Validated Water Loss Audits and Reporting November 3, 2016 California Water Association 2016 Annual Conference Sue Mosburg Program Manager Sweetwater Authority California Water Loss Control Collaborative Chair AWWA California-Nevada Water Loss Control Committee Chair

2 Focus on Water Loss Control 1991 (California Urban Water Conservation Council) Best Management Practice % unaccounted for water Water Balance/Audit (2009 revision ) 2014 (Senate Bill 1420) Water Management: Urban Water Management Plans Requires water audits, using M36 and AWWA software every 5 years, with Urban Water Management Plans (starting July 2016) October 9, 2015 (Senate Bill 555) Urban Retail Water Suppliers: Water Loss Management Annual Water Audit Expert validation Steps to increase validity Performance standards (by 2020)

3 Senate Bill 555 On or before January 2017 DWR shall adopt rules Water loss audits in accordance with AWWA M36 method Process for validating audits Technical qualifications of validator Method for submitting water loss audit reports October 1, 2017 submit validated water loss audit report Must be attested by: Chief Financial Officer, Chief Engineer, or General Manager DWR shall post all validated reports on the Internet Those deemed incomplete, not valid, unattested or incongruent shall be returned; a complete audit must be resubmitted within 90 days Each submitted audit much include steps taken to Increase data validity Reduce apparent loss volume Reduce real loss volume DWR shall provide water loss detection technical assistance from available funds No earlier than January 1, 2019 (nor later than July 1, 2020) Water Board adoption of performance standard rules

4 AWWA Free Water Audit Software: Reporting Worksheet AWWA Water Audit Software WAS v5.0 American Water Works Association. Water Audit Report for: Northern San Leandro Combined Water Sewer Storm Utility District ( ) Reporting Year: / /2013 Industry Copyright 2014, All Rights Reserved. Standard (M36)? Click to access definition + Click to add a comment Please enter data in the white cells below. Where available, metered values should be used; if metered values are unavailable please estimate a value. Indicate your confidence in the accuracy of the input data by grading each component (n/a or 1-10) using the drop-down list to the left of the input cell. Hover the mouse over the cell to obtain a description of the grades All volumes to be entered as: MILLION GALLONS (US) PER YEAR To select the correct data grading for each input, determine the highest grade where the utility meets or exceeds all criteria for that grade and all grades below it. Master Meter Error Adjustments Free WATER SUPPLIED < Enter grading in column 'E' and 'J' > Pcnt: Value: Volume from own sources: +? 5 1, MG/Yr +? MG/Yr Water imported: MG/Yr MG/Yr Water exported: MG/Yr MG/Yr Enter negative % or value for under-registration WATER SUPPLIED: MG/Yr Enter positive Defaults % or value for over-registration provided +? +? +? +?. AUTHORIZED CONSUMPTION Click here:? Billed metered:? MG/Yr for help using option Billed unmetered:? MG/Yr buttons below Unbilled metered:? MG/Yr Pcnt: Value: ~ 20 potential inputs Unbilled unmetered: +? MG/Yr 1.25% MG/Yr Default option selected for Unbilled unmetered - a grading of 5 is applied but not displayed Use buttons to select AUTHORIZED CONSUMPTION:? MG/Yr percentage of water supplied OR ~10 value inputs for typical utility use WATER LOSSES (Water Supplied - Authorized Consumption) MG/Yr Apparent Losses Pcnt: Value: Unauthorized consumption: +? MG/Yr 0.25% MG/Yr Unauthorized consumption volume entered is greater than the recommended default value Customer metering inaccuracies: +? MG/Yr 1.00% awwa.org/waterlosscontrol MG/Yr Systematic data handling errors: +? MG/Yr 0.25% MG/Yr Apparent Losses:? MG/Yr Real Losses (Current Annual Real Losses or CARL) Real Losses = Water Losses - Apparent Losses: WATER LOSSES:? MG/Yr MG/Yr NON-REVENUE WATER NON-REVENUE WATER: = Water Losses + Unbilled Metered + Unbilled Unmetered SYSTEM DATA MG/Yr Length of mains: +? miles Number of active AND inactive service connections: +? 6 1,000 Service connection density:? 10 conn./mile main? Are customer meters typically located at the curbstop or property line? Yes (length of service line, beyond the property Average length of customer service line: +? ft boundary, that is the responsibility of the utility) Average length of customer service line has been set to zero and a data grading score of 10 has been applied Average operating pressure: +? psi COST DATA Total annual cost of operating water system: +? 5 $1,000,000 $/Year Customer retail unit cost (applied to Apparent Losses): +? 7 $3.50 $/1000 gallons (US) Variable production cost (applied to Real Losses): +? 7 $3, $/Million gallons Use Customer Retail Unit Cost to value real losses WATER AUDIT DATA VALIDITY SCORE: *** YOUR SCORE IS: 60 out of 100 *** A weighted scale for the components of consumption and water loss is included in the calculation of the Water Audit Data Validity Score

5 Audit Data Sources Supply data - Produced - Purchased - Metering & testing Meter data - Meter inventory - Testing policy - Test data Consumption data - Billed water - Unbilled water - Meter reading & billing cycle data System & Cost data - Length of mains - Connections - Pressure - Operating costs

6 The Water Balance SYSTEM INPUT VOLUME AUTHORIZED CONSUMPTION WATER LOSSES BILLED AUTHORIZED CONSUMPTION UNBILLED AUTHORIZED CONSUMPTION $ $ $ APPARENT LOSSES $ $ $ BILLED METERED CONSUMPTION BILLED UNMETERED CONSUMPTION UNBILLED METERED CONSUMPTION UNBILLED UNMETERED CONSUMPTION CUSTOMER METER INACCURACIES UNAUTHORIZED CONSUMPTION DATA HANDLING ERRORS REVENUE WATER NONREVENUE WATER Own REAL LOSSES Sources: This Own is the Sources: volume This of water is the input volume to oa sources. sources. $ $ $ Own Sources: T sources.

7 Which Value Goes Where?

8 Data Validity Guidance Functional Focus Area Audit Data Collection Short-term loss control Long-term loss control Launch auditing and loss control team; address production metering deficiencies Research information on leak detection programs. Begin flowcharting analysis of customer billing system Analyze business process for customer metering and billing functions and water supply operations. Identify data gaps. Conduct loss assessment investigations on a sample portion of the system: customer meter testing, leak survey, unauthorized consumption, etc. Begin to assess long-term needs requiring large expenditure: customer meter replacement, water main replacement program, new customer billing system or Automatic Meter Reading (AMR) system. Water Audit Data Validity Level / Score Level I (0-25) Level II (26-50) Level III (51-70) Level IV (71-90) Level V (91-100) Establish/revise policies and procedures for data collection Establish ongoing mechanisms for customer meter accuracy testing, active leakage control and infrastructure monitoring Begin to assemble economic business case for long-term needs based upon improved data becoming available through the water audit process. Refine data collection practices and establish as routine business process Refine, enhance or expand ongoing programs based upon economic justification Conduct detailed planning, budgeting and launch of comprehensive improvements for metering, billing or infrastructure management Annual water audit is a reliable gauge of year-to-year water efficiency standing Stay abreast of improvements in metering, meter reading, billing, leakage management and infrastructure rehabilitation Continue incremental improvements in short-term and long-term loss control interventions Target-setting Establish long-term apparent and real loss reduction goals (+10 year horizon) Establish mid-range (5 year horizon) apparent and real loss reduction goals Evaluate and refine loss control goals on a yearly basis Benchmarkin g Preliminary Comparisons - can begin to rely upon the Infrastructure Leakage Index (ILI) for performance comparisons for real losses (see below table) Performance Benchmarking - ILI is meaningful in comparing real loss standing Identify Best Practices/ Best in class - the ILI is very reliable as a real loss performance indicator for best in class service For validity scores of 50 or below, the shaded blocks should not be focus areas until better data validity is achieved.

9 WRF Water Data Analysis and Validation: Simple steps of data validation were applied California CUWCC BMP1.2 Count Percent of Full Data Set Number of Utilities Reporting Water Audit Result % Number of Utilities Reporting Negative Water Losses 5 4% Number of Utilities Reporting ILI< % Number of Utilities Reporting ILI>20 3 2% Number of Utilities Reporting Erroneous Infrastructure Data 1 1% Final Data Set After Removal of Erroneous Water Audit Reports 80 64% Results highlight the problems utilities are facing when completing an audit for the first time! Source: Reinhard Sturm 2013

10 Statewide Water Loss Management Program

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12 Water Loss Collaborative Timeline June 10, AWWA ACE15 July 1 Rough plan put to paper July 18 First Steering Committee meets in Sacramento July 28 Initial cost estimate Draft timeline Preliminary scope August Building out the program Development Contract with Department of Water Resources Senate Bill 555 moving forward with opposition

13 Water Loss Collaborative Timeline September 18 Funding meetings September 28 CA-NV AWWA Water Loss Collaborative launch Water Loss Collaborative logo unveiled October SB 555 signed into law Leak Detection Training November/December Solid budget estimate Getting the word out Funding meetings Scope refinement Basic Website

14 Water Loss Collaborative Timeline January 5, 2016 California Water Board votes to fund Water Loss Technical Assistance Program through CA-NV AWWA February 26 CA-NV AWWA Receives notice to proceed March Request for Proposal issued by CA-NV AWWA April Consultant Program Management Team Selection May 4 CA-NV AWWA Governing Board Approves Contracts Notice to proceed issued to Program Management Team Registration Website launched May 26 Outreach and Recruitment Stakeholders meet May 31 Water Loss TAP formal Launch press release June 15 Fully Executed Grant Contract June 22 Fully Executed Contract PM Team June 28, 2016 Program launch webinar August 9 First workshop

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16 Water Loss TAP Goals: to provide: Water Loss Technical Assistance Program Water Loss TAP Training on AWWA Water Audit Methodology Level 1 Validation of Water Audits 452 Urban Water Agencies WAVE 1 WAVE 2 WAVE 3 WAVE 4 in-person work session teleconference work session in-person work session final validation teleconference work session

17 Water Loss Technical Assistance Program Timeline submission of level 1 validated audits

18 CALIFORNIA WATER LOSS CONTROL COLLABORATIVE Water Loss Technical Assistance Program AKA: the Water Loss TAP

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23 Water Loss Technical Assistance Program Level 1 Validation Top-down review of supporting documents for water audit Review of input derivations Affirmation of operational policies and practices to data grades Documentation of basis for inputs and data grades Flagging indicators of hidden inaccuracies requiring further investigation (gremlins)

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25 2016 UWMP Submitted Data - Unfiltered financial volumetric n = 292 n = 292 n = 292 STATISTIC min median max UNIT Customer Retail Unit Cost $0.00 $3.93 $180, $ / 1,000 gal Variable Production Cost $0.00 $1, $25,007, $ / million gal NRW as % of Operating Cost 0.00% 3.54% % % of operating cost Apparent Losses gal/ serv conn / day Real Losses (serv conns) gal/ serv conn / day Real Losses (pressure) gal/ serv conn / day / psi ILI CARL / UARL Data Validity Score points out of 100

26 California Data Reliability Timeline 2019, QWLAV 2016 TAP L1 Audits 2015 UWMPs BMP1.2 - CUWCC DWR Requirement Year 2 data L1 Baseline L1 Self Reported Self Reported

27 Next Steps 2019/2020 Are We Healthy?

28 Water Loss TAP (Stakeholder/steering Committee) Coordination between industry associations, regulators, utilities Water Audit Rulemaking Group Water Loss Control Committee CA-NV AWWA Section Qualified Water Loss Auditor Certificate (QWALV) development subcommittee Leak detection, pressure management, meter testing training Executive Order/ Urban Advisory Group (wholesale and small system) CEC devices study PUC Rate case Water Loss Control Collaboration WRF projects to further refine the process, real loss component analysis, data validity criteria, water loss control program design

29 Questions? Sue Mosburg