Laserfiche WebLink
�+. A -25 <br />DRAFT URBAN WATER MANAGEMENT PLAN <br />Assuming the average remaining life of a toilet replaced by a program is 5 years, the cost <br />per AF saved is about $1,400. <br />BMP 9 is relatively expensive at $1,863 per AF. Conducting water surveys at non- <br />residential sites can be expensive (estimated cost of $1,500 per site) with modest water <br />savings given the characteristics of the typical City non - residential customer. The city <br />should aim to target its water surveys at sites with the largest water savings potential. <br />This could improve the cost - effectiveness of this program. BMP 9 also includes non- <br />residential ULFT replacement. The current BMP 9 coverage requirements are minimal <br />with only 250 ULFT replacements required; the coverage requirements for this BMP are <br />under review and may change in the future. <br />BMP 1 is the most expensive at $2,071 per AF. This reflects the fact that a majority of <br />homes (e.g., estimated to be 76 %) already have low -flow showerheads, the biggest indoor <br />savings device installed during a residential water survey. Although water surveys can be <br />a good customer service mechanism and a good way to verify data for the Water <br />Allocation Program, the City will need to consider the cost effectiveness of this option in <br />comparison to alternatives. The BMP coverage requirements are fairly aggressive, <br />requiring 2,237 and 1,418 water surveys for single - family homes and multiple - family <br />dwelling units respectively between 2003 and 2008. <br />s Given potential freerider problems with ULFT replacement programs, the 5 -year remaining life <br />assumption is possible (Freeriders in ULFT Programs, CUWCC, December 2002). <br />15 <br />