agenda city of watsonville city council/redevelopment agency meeting

C. System Water Audits, Leak Detection, and Repair
Description: The City routinely conducts distribution system water audits, leak detection, and repair.
The City has permanently incorporated these programs into its utility operations.
City staff reviews and compares the water production records and water metered records annually.
Over the last 10 years the annual “unaccounted” for water losses average 6.55%. The City’s
unaccounted-for water rate is below the ten percent limit set forth by the California Urban Water
Conservation Council (CUWCC) in its Memorandum of Understanding Regarding Urban Water
Conservation Best Management Practices (MOU) in 1992.
Table 6.C.1 - Unaccounted for Water
(in Million Gallons)
Year Produced Metered out % Unaccounted
2010 2428.8 2262.3 6.86
2009 2528.8 2411.2 4.65
2008 2869.2 2662.6 7.20
2007 2812.4 2618.7 6.89
2006 2578.9 2366.4 8.24
2005 2467.8 2288.3 7.27
2004 2542.8 2377.1 6.52
2003 2487.8 2306.1 7.30
2002 2503.4 2373.1 5.20
2001 2481.4 2347.6 5.39
The Field Services division of Public Works inspects and repairs all water service mains in the service
area. Leaks on either service lines or main-lines are repaired in a timely manner. Following is a
summary of their work over the last five years.
Table 6.C.2 - Distribution lines Maintenance and Costs
2006 2007 2008 2009 2010
Miles Of Mains Maintained 172 176 177 177 177
Number of Service
Connection Breaks / Leaks
Number of Main Breaks /
Leaks
85 59 55 69 57
10 16 6 14 7
Funds for this program are included in the annual operations and maintenance budget.
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