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Comprehensive Water Plan City of Arden Hills, MN WSB Project No. 3455-20 PAGE 9 Future Water Conservation Policies The Minnesota DNR has established eight water conservation objectives and strategies. These are listed below with comments on the City of Arden Hills’ progress towards the completion of each. 1. Reduce unaccounted (non-revenue) water loss to less than 10 percent. • The City’s average unaccounted water use from 2010 to 2015 was 15.7 percent, which is above the recommended target of 10 percent. The City performs leak detection and water audits periodically as needed and will consider metering water use during hydrant flushing, ice rink flooding, and other water supplier service activities. • A total of 2,620 metered connections in Arden Hills are tested as needed. The average age of the City’s existing meters is three years, and meters are replaced as needed. 2. Achieve residential demand of less than 75 gallons per capita per day. • The average residential per capita water demand for the City of Arden Hills from 2010 to 2015 was 46 gallons per capita per day (gpcd), which is less than the 75 gpcd target. This demand has been decreasing steadily since 2012. • In order to continue reducing residential demand, the City will revise its ordinances on water efficient landscaping and water reuse, revise its ordinance to limit irrigation, continue to make water system improvements, continue to provide incentives for installing water efficient appliances and fixtures, and continue to conduct water conservation education and outreach. 3. Achieve at least a 15 percent reduction in per capita daily demand across all customer categories over the next 10 years. • Although the City of Arden Hills residential per capita water demand is already quite low and achieving this level of reduction may be infeasible, the City will conduct facility water use audits annually, install enhanced water meters, install conservation fixtures and appliances, repair leaking system components, investigate water reuse, reduce outdoor water use, and train employees on how to conserve water. 4. Achieve a decreasing trend in total per capita demand. • Total per capita, residential, and commercial/industrial/institutional water demands have all shown a decreasing trend since 2012. Residential demand has shown a more marked trend, and conservation measures that target household water use are likely the reason for this trend. A graph showing total per capita water demand by customer category is included in Appendix 8. 5. Reduce peak day demand so that the ratio of maximum to average day demand is less than 2.6. • The City does not have the ability to measure maximum day demands, so this ratio is unknown. Dr a f t 11 / 2 0 / 2 0 1 7