2018-09-26 CC Set Agenda - Laserfiche WebLink

Home Browse Search

Local Water Supply Plan—Centerville Objective 4:Achieve a Decreasing Trend in Total Per Capita Demand Include as Appendix 8 one graph showing total per capita water demand for each customer category (i.e., residential, institutional, commercial, industrial)from 2005-2014 and add the calculated/estimated linear trend for the next 10 years. Describe the trend for each customer category; explain the reason(s)for the trends, and where trends are increasing. Centerville has historically had low per capita water demands and all trends are decreasing. Total per capita water demand is decreasing; from approximately 90 gpcd in 2005 — 2011 to 70 gpcd in 2014 — 2015. The total per capita water demand average was approximately 83 gpcd between 2010 and 2015. Water use in 2012 and 2013 was higher due to significant bulk water sales for residential development. 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. Commercial and Institutional water sales continue to be a small portion of the City's water use. Commercial and Institutional per capita water use is trending downward from a maximum of 14 gpcd in 2006.The nonresidential per capita water demand use was approximately 6.7 gpcd in 2010—2015 Objective 5: Reduce Peak Day Demand so that the Ratio of Average Maximum day to the Average Day is less than 2.6 Is the ratio of average 2005-2014 maximum day demand to average 2005-2014 average day demand reported in Table 2 more than 2.6? Q Yes ❑ No Calculate a ten year average (2005—2014) of the ratio of maximum day demand to average day demand: 2.79 . The 2010—2015 average ratio is : 2.62 . The position of the DNR has been that a peak day/average day ratio that is above 2.6 for in summer indicates that the water being used for irrigation by the residents in a community is too large and that efforts should be made to reduce the peak day use by the community. It should be noted that by reducing the peak day use, communities can also reduce the amount of infrastructure that is required to meet the peak day use. This infrastructure includes new wells, new water towers which can be costly items. Objective 6: Implement a Conservation Water Rate Structure and/or a Uniform Rate Structure with a Water Conservation Program Water Conservation Program Municipal water suppliers serving over 1,000 people are required to adopt demand reduction measures that include a conservation rate structure, or a uniform rate structure with a conservation program that achieves demand reduction. These measures must achieve demand reduction in ways that reduce 27 72