The Evolution of Conservation Rates in Phoenix, Arizonaby Edward G. Blundon,
Jeffrey S. DeWitt,
Document Type: Proceeding Paper
Part of: Water Management in the '90s: A Time for Innovation
Conservation or increasing block rates first implemented in Phoenix, Arizona in 1982 were reexamined by a three year study involving Water Department staff, a Citizen Rates Committee and consultants. The study recommended to replace the increasing block rate structure which consisted of two season, three customer classes and three blocks with a simpler uniform rate structure with a three seasons, and no customer classes in 1990. The new rate structure, which actually enhanced conservation savings, uses a new cost of service concept that allocates extra capacity cost to the months when the capacity is used, This increases the seasonal differential in the rates to enhance conservation savings.
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