Orange County NC Website
<br />1201 to 150Q square feet, 1501 to 1800 square feet, and greater than 1800 square feet, there is a nearly <br />straight-lzne increase in average water use. However, unlike the OWASA study which showed a five- <br />folddifference in water use between its smallest and largest home size ranges, the Efland analysis shows <br />only anapproximate thirty percent increase from the.smallest to the largest home size ranges. <br />There are a number of reasons why the Efland study has produced results that differ so drastically from <br />those produced by the OSASA study. Amang_ the most telling of these are that: I) the houses in Efland <br />are much smaller and less expensive than those in the- OWASA service area and have fewer water- <br />consumingamenities such as whirlpool baths, hot tubs, swimming pools and lawn irrigation systems; <br />2} the average income of the residents -of Efland is much lower resulting in more financially <br />conservative consumption characteristics; and 3) Efland is still a primarily rural area which would <br />typically be expected to exhibit more conservative water use practices man those of the. urbanized <br />OWASA service area <br />The primary implication of the Efland water use analysis is that a sliding fee scale based solely on a <br />prof ected relationship between_home size and system demand/impact can provide a thirty percent <br />difference. between the bottom and top of the scale. Based on a $1000 mid-range fee, homes falling in <br />the lowest range would pay approximately $850 while homes in the largest range will pay <br />approximately $1150. <br />Engineering staff are currently in the- process of preparing a more formal reporting of this analysis, <br />outlining the process of data collection and analysis, comparing the Efland report and outcome with the <br />OWASA study, noting the problems ofcollecting Efland data and shortcomings in that data, etc. That <br />report will be submitted to the BOCC later in March: A simple chart summarizing the relationship <br />between water use and home size is attached to this memorandum. If j-may provide additional <br />information at this time, please advise. <br />