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Local Water Supply Plan Template —December 8, 2015 Is your ten-year average (2005-2014) unaccounted Water Use in Table 2 higher than 10%? ❑Yes RI No What is your leak detection monitoring schedule? (e.g. monitor 1/3rd of the city lines per year) The City conducts leak detection as -needed or when a leak is suspected. Water Audits - are intended to identify, quantify and verify water and revenue losses. The volume of unaccounted-for water should be evaluated each billing cycle. The American Water Works Association (AWWA) recommends that ten percent or less of pumped water is unaccounted-for water. Water audit procedures are available from the AWWA and MN Rural Water Association www.mrwa.com . Drinking Water Revolving Loan Funds are available for purchase of new meters when new plants are built. What is the date of your most recent water audit? —1995 Frequency of water audits: ❑ yearly 0 other (specify frequency): Conducted when a leak is suspected but not apparent. The City does not regularly schedule audits because unmetered water is approximately one percent. Leak detection and survey: ❑ every year ❑ every other year I1 periodic as needed or biannually Year last leak detection survey completed: N/A If Table 2 shows annual water losses over 10% or an increasing trend over time, describe what actions will be taken to reach the <10% loss objective and within what timeframe The City's unmetered water has regularly been below 5%. Metering -AWWA recommends that every water supplier install meters to account for all water taken into its system, along with all water distributed from its system at each customer's point of service. An effective metering program relies upon periodic performance testing, repair, maintenance or replacement of all meters. AWWA also recommends that water suppliers conduct regular water audits to ensure accountability. Some cities install separate meters for interior and exterior water use, but some research suggests that this may not result in water conservation. Complete Table 23 by adding the requested information regarding the number, types, testing and maintenance of customer meters. 32