Figueroa Avenue Water Pollution Control Facility

The Figueroa Avenue Water Pollution Control Facility (FAWPCF) serves most of the developed areas within the City of Yuma. In operation since the early 1970s, it is the older of the city's two wastewater treatment plants. The facility is permitted to treat up to 12 million gallons per day (MGD), with an average daily flow of approximately 7 MGD. FAWPCF’s treatment process includes primary (bar screens, grit chambers, primary clarifiers), secondary (aeration basins, secondary clarifiers) , and tertiary (chlorine contact basins, dechlorination) treatment stages. Sludge is further processed using a gravity thickener and anaerobic digesters. The digested and thickened sludge is hauled from the facility by an independent contractor, AgTech, for use in agricultural land application in accordance with regulatory requirements. This treatment train produces high-quality treated effluent discharged directly into the Colorado River.

Desert Dunes Water Reclamation Facility

The Desert Dunes Water Reclamation Facility (DDWRF) serves Yuma’s eastern region and began operations in 2005. It is permitted to treat up to 3.3 MGD and is currently undergoing an expansion to 6.6 MGD to meet the ever increasing domestic and industrial wastewater treatment demands driven by the city’s steady growth. The treatment process at DDWRF consists of preliminary treatment (screening), secondary treatment (aeration basin and secondary sedimentation), and tertiary treatment (filtration and UV disinfection).  The solids handling system consists of an aerobic digester and thickening facilities. This advanced treatment train supports biological nutrient removal and produces Class A+ effluent suitable for reuse and groundwater recharge. Treated water is percolated into the ground through on-site percolation basins.