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Local Water Supply Plan—Centerville For unmetered systems, describe any plans to install meters or replace current meters with advanced technology meters. Provide an estimate of the cost to implement the plan and the projected water savings from implementing the plan. All systems are metered including public buildings. Table 24.Water source meters Water Source 2 5 yrs - 20/30 yrs(meters tested (wells/intakes) recently to confirm accuracy) Objective 2:Achieve Less than 75 Residential Gallons per Capita Demand (GPCD) The 2002 average residential per capita demand in the Twin Cities Metropolitan area was 75 gallons per capita per day. Is your average 2010-2015 residential per capita water demand in Table 2 more than 75? ❑ Yes Q No What was your 2005—2014 ten-year average residential per capita water demand? 74 g/person/day Describe the water use trend over that timeframe: Residential per capita water is trended down during the last 11 years and has not exceeded 75 gpcd since 2009. Residential per capita water demand averaged 68 gpcd in 2010—2015. Per Capita demand in 2014 and 2015 was only 59 gpcd. Complete Table 25 by checking which strategies you will use to continue reducing residential per capita demand and project a likely timeframe for completing each checked strategy(Select all that apply and add rows for additional strategies): Table 25.Strategies and timeframe to reduce residential per capita demand ❑ Revise city ordinances/codes to encourage or require water efficient landscaping. ❑ Revise city ordinance/codes to permit water reuse options,especially for non- potable purposes like irrigation,groundwater recharge,and industrial use.Check with plumbing authority to see if internal buildings reuse is permitted Q Water ordinances to limit irrigation.Centerville currently limits irrigation to Ongoing odd/even and before 10 am and after 6 pm only. ❑ Revise outdoor irrigation installations codes to require high efficiency systems (e.g.those with soil moisture sensors or programmable watering areas) in new installations or system replacements. 0 Make water system infrastructure improvements:Continue preventative Ongoing maintenance to replace aging infrastructure and proactively replace valves and bolts(which fail first). ❑Offer free or reduced cost water use audits)for residential customers. ❑ Implement a notification system to inform customers when water availability conditions change. ❑ Provide rebates or incentives for installing water efficient appliances and/or 25 70