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Bruce Westby <br />From: Davis, Brian <Brian.Davis@metc.state.mn.us> <br />Sent: Monday, November 27, 2017 12:01 PM <br />To: Bruce Westby <br />Subject: Water Efficiency Potential Project Request <br />Attachments: MC_Efficiency_PrelimScreeningResults_Final.pdf <br />The Metropolitan Council has commissioned a project to assess the economic potential of whether an aggressive water <br />conservation program could reduce the community's expansion of water supply to meet future residential needs. Your <br />community has been identified as having the potential to benefit from this analysis. We are now asking if you are <br />willing to include your community in this study. <br />Essentially, the study seeks to answer these questions: <br />1. What overall peak reduction would a community need to achieve to avoid (or delay) installation of a new <br />well? <br />2. What amount of total water savings could be realized, and how many years of delay for a new well (or wells) can <br />be achieved? <br />3. What is the total cost to reduce peak demand through residential efficiency, and how does this cost compare <br />with the cost of a new well (or wells)? <br />This analysis focuses on residential water use. The first step in our analysis was an exercise to determine which of the 94 <br />metropolitan communities with groundwater supplies and a large residential sector have the most potential to benefit <br />from this analysis. We considered total population growth through 2040, residential water demand, peak summer to <br />winter ratio, and estimated number of new wells through 2040. Your community ranks within the top 20 of the 94 <br />communities that we reviewed. Attached is a memo that details the analysis used to screen for the communities with <br />the greatest potential for residential water efficiency. You can review this memo to determine how your community <br />was selected for this study. <br />There is no cost to your community to participate. However, if you do agree to participate, then we will request the <br />following information specific to your community for the next part of our analysis: <br />■ Well yield data for each well <br />■ Annual operational costs for treatment and for well operation <br />■ Description, program costs, and number of staff for current water conservation programs <br />■ Unit cost per 1,000 gallons of raw water (before treatment, if any) <br />Please let me know by Friday, December 8th if you are willing to participate. <br />