Municipal drinking water facility GFH® Media Re Moves aR senic in aR izona Wate R s upply Challenge Like many communities in the desert southwest, Phoenix, Arizona’s water supply includes wells with arsenic concentrations exceeding 10 ppb. Long before the USEPA revised the arsenic rule from 50 parts per billion (ppb) to 10 ppb, the City of Phoenix began bench and pilot scale studies for arsenic removal options. Early investigations focused

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