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13 PART III. WATER CONSERVATION PLAN Water conservation programs are intended to reduce demand for water, improve the efficiency in use and reduce losses and waste of water. Long-term conservation measures that improve overall water use efficiencies can help reduce the need for short-term conservation measures. Water conservation is an important part of water resource management and can also help utility 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) Average annual volume unaccounted water for the last 5 years 58,000,000 gallons Average percent unaccounted water for the last 5 years 11.1 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%. Already replaced two malfunctioning mainline production meters that were registering 10% higher flow rate than the actual rate in 2005. Since then the City’s unaccounted water has been well under the 10%. Also didn’t add in estimates for main line flushing, sewer cleaning, winter ice rinks, main breaks and other non-metered uses. These other non metered uses add up to more than 5 million gallons per year, which will drop the unmetered use another percentage point. The City will include those in the future which will bring the unaccounted water use under 10%. Residential Gallons Per Capita Demand (GPCD) Average residential GPCD use for the last 5 years (use data from Table 1) 74.6 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. Initiating new lawn watering policy which will decrease overall GPCD Total Per Capita Demand: From Table 1, is the trend in overall per capita demand over the past 10 years increasing or decreasing? If total GPCD is increasing, describe the goals to lower overall per capita demand or explain the reasons for the increase. Possibly decreasing a little, but definitely not increasing.