2010-07-14 CC Meeting Packet - Laserfiche WebLink

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managers satisfy the ever - increasing demands being placed on water resources. Minnesota Statutes 103G.291, requires public water suppliers to implement demand reduction measures before seeking approvals to construct new wells or increases in authorized volumes of water. Minnesota Rules 6115.0770, require water users to employ the best available means and practices to promote the efficient use of water. Conservation programs can be cost effective when compared to the generally higher costs of developing new sources of supply or expanding water and /or wastewater treatment plant capacities. A. Conservation Goals. The following section establishes goals for various measures of water demand. The programs necessary to achieve the goals will be described in the following section. Unaccounted Water (calculate five year averages with data from Table 1) Avera ann ual volume u water for the last 5 years 3,758,000 gall ons Average percent unaccounted water for the last 5 years 4.3 percent AWWA recommends that unaccounted water not exceed 10 %. Describe goals to reduce unaccounted water if the average of the last 5 years exceeds 10 %. N/A Residential Gallons Per Capita Demand (GPCD) Average residential GPCD use for the last 5 years (use data from Table 1) 190.2 GPCD In 2002, average residential GPCD use in the Twin Cities Metropolitan Area was 75 GPCD. Describe goals to reduce residential demand if the average for the last 5 years exceeds 75 GPCD. Updated data through 2008 has been included which indicates that the city is making progress in reducing per capita demand. The 2008 demand was below 80 GPCD. City will implement a requirement for rain sensors on new irrigation systems. A conservation rate system will be implemented in 2010. Rates will be reviewed annually and adjusted as needed to provide necessary conservation incentives to users. We expect to achieve progress each year and expect to reach the Metro average within five years. The city will consider monthly billing, when that is practical and necessary. Total Per Capita Demand: From Table 1, is the trend in overall per capita demand over the past 10 years ❑ increasing or E decreasing? If total GPCD is increasing, describe the goals to lower overall per capita demand or explain the reasons for the increase. Peak Demands (calculate average ratio for last five years us data data from Table 1) Average maximum day to average day ratio 1 2.6 If peak demands exceed a ratio of 2.6, describe the goals for lowering peak demands. B. Water Conservation Programs. Describe all short-term conservation measures that are available for use in an emergency and long -term measures to improve water use efficiencies for each of the six conservation program elements listed below. Short-term demand reduction measures must be included in the emergency response procedures and must be in support of, and part of, a community all - hazard emergency operation plan. Page 12 of 19 :•