Water and Wastewater System Energy Audits – Case Studies for Flagstaff, Arizona and the Kachina Village Improvement District
In Arizona, the Arizona Public Service (APS) estimates that water systems use 1/7th of all the power used in the State. From the APS testing program, it is estimated that 60 to 70 percent of all pumps have tested below industry standards or changes in operations are needed to operate more efficient. This presentation discusses the findings associated with energy studies completed for a small water supply system (Kachina Village Improvement District) and for a large system (City of Flagstaff, Arizona). The studies show that any water and/or wastewater system, regardless of size can benefit from an energy audit. The studies resulted in significant annual savings, potential rebates from APS to offset replacement costs, high return on investments, while promoting green initiatives.
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