Wastewater Recharge: Water Quality and Operationsby David M. Esposito, Pima County Wastewater Management, Dep, United States,
Don Armstrong, Pima County Wastewater Management, Dep, United States,
David G. Eaker, Pima County Wastewater Management, Dep, United States,
George A. Brinsko, Pima County Wastewater Management, Dep, United States,
Abstract: The Green Valley Wastewater Treatment Facility began operations in its current configuration in 1981. It treats approximately 1 million gallons per day of municipal wastewater, with disposal through percolation beds. At the present time, it is Arizona's largest operating controlled ground water recharge facility. It is the only wastewater treatment plant discharging through percolation with no alternative methods of effluent disposal. Percolation bed performance is thus a critical parameter for continued operation of the facility. The recently enacted Arizona Environmental Quality Act requires maintenance of ground water quality at drinking water standards. Ground water quality protection is also a critical factor. This paper presents a summary of important operating and ground water quality parameters related to the facility's operation over the past five years.
Subject Headings: Groundwater quality | Water quality | Water treatment plants | Wastewater treatment plants | Percolation | Wastewater management | Groundwater pollution | Wastewater treatment | Groundwater recharge | Arizona | North America | United States
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