Peoria Beardsley WRF | Wastewater Treatment Plant in Peoria, Arizona

Peoria Beardsley WRF is a municipal wastewater treatment facility located in Peoria, Arizona, serving an estimated population of 40,040. The plant is situated in Maricopa County, part of the rapidly growing Phoenix metropolitan area. As a medium-sized agglomeration, it plays a key role in managing the region's wastewater. The plant operates under the regulatory framework of the US Clean Water Act, administered through the EPA's National Pollutant Discharge Elimination System (NPDES) permit program. For facilities serving populations of this scale, secondary treatment is typically required as a minimum standard, with additional nutrient removal or advanced treatment depending on the sensitivity of the receiving water body. The treated effluent from Peoria Beardsley WRF ultimately drains into the Lower Colorado River Basin, contributing to water resources in the arid Southwest. The plant's operations are critical for protecting local groundwater and downstream aquatic habitats, including the Gila River and Colorado River ecosystems, which support diverse species and are important for regional water supply.

The plant discharges into the Lower Colorado River Basin, a region characterized by arid climate and high water demand. The receiving waters eventually flow into the Colorado River, which supports critical habitats for native fish species and provides water for agriculture and municipalities across multiple states. The plant's treatment performance is essential for maintaining water quality in this ecologically sensitive and water-scarce watershed.