The Treatment Division operates and maintains the treatment facilities that receive, treat, and dispose of over 62 million gallons per day (MGD) of sanitary sewage. Two major facilities handle sewage from the metropolitan Tucson area, and seven facilities serve remote areas scattered throughout several areas of eastern Pima County.
Weather information at the Treatment Plants
Roger Road Water Reclamation Facility (WRF)
The Roger Road WRF was established in 1951. It had a capacity to treat 41 MGD and served the urban Tucson area that lies southerly of the Rillito Creek for more than 60 years.
After more than 60 years of service, the Roger Road Wastewater Reclamation Facility (WRF) will no longer be treating Pima County wastewater. As of January 8, 2014 the last flows to the Roger Road WRF were diverted from the old plant to the new facility, Agua Nueva WRF.
Agua Nueva Water Reclamation Facility (WRF)
Since December 16, 2013, the Pima County Regional Wastewater Reclamation Department (RWRD) has been diverting flows from the Roger Road WRF to the Agua Nueva Water Reclamation Facility (WRF).
The Agua Nueva WRF is a new state-of-the-art water reclamation facility that will allow Pima County to meet new strict environmental standards for effluent discharges into the Santa Cruz River.
Tres Rios Water Reclamation Facility (WRF)
The Tres Rios WRF has a current capacity of 25 MGD. Work to increase the facility's capacity to 37.5 MGD is underway; construction began in January 1998. This facility, established in 1977, serves the northern parts of the Tucson metropolitan area, Oro Valley, and a major portion of the Town of Marana.
Randolph Park Water Reclamation Facility (WRF)
Originally placed into operation in 1975, the Randolph Park WRF was temporarily removed from active service in 1995. As part of RWRD's commitment to providing safe and efficient sewage treatment to our community, a project is currently underway to replace the Randolph Park facility with a new, modern system.
Six outlying facilities serve smaller towns and rural areas of Pima County:
- Arivaca Junction WRF
- Avra Valley WRF
- Corona de Tucson WRF
- Green Valley WRF
- Mt. Lemmon WRF
- Pima County Fairgrounds WRF