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Flagstaff to study new wastewater plant as solids loads, growth outpace existing facilities
Summary
City water leaders told council the two existing plants are nearing solids-processing limits despite conservation-driven lower liquid flows. Staff presented a cost estimate and phased options; council asked staff to pursue funding research and keep the project in the 10-year CIP.
City water staff told the Flagstaff City Council Friday that the city’s two wastewater treatment plants — Wildcat Hill and Rio de Flag — are approaching their solids-processing limits even though per-capita water use has fallen, and that a new treatment plant will be required to serve projected growth.
Lee Williams, Director of Water Services, said conservation has reduced the liquid flow to the plants but has not reduced the solids load, because modern fixtures use less water but the same amount of waste is produced. “We are not near the liquid capacity, but we are at the solids capacity,” Williams said, noting that…
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