Treatment Division
The Treatment Division operates and maintains the treatment facilities
that receive, treat, and dispose of over 64 million gallons of sanitary
sewage per day (mgd). Three major facilities handle sewage from
the metropolitan Tucson area, and eight facilities serve remote
areas scattered throughout sewered areas of eastern Pima County.
Map of Treatment Facilities
Table showing treatment facilities,
capacity, and methods (PDF - data from 2002)
PCWMD Four Year Review
(PDF) See pp. 8-11 for detailed information about treatment facilities.
Roger Road Wastewater Reclamation Facility (WRF)
The Roger Road WRF was established in 1951. It has a capacity
to treat 41 mgd and serves the urban Tucson area that lies southerly
of the Rillito Creek.
Illustrations showing treatment
processes at the Roger Road WRF
Clockwise from upper left: clarifiers, biotowers,
enclosed biofilters, covered headworks
(part of the odor control project at Roger Road)
Ina Road Wastewater Reclamation Facility (WRF)
The Ina Road 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.
Clockwise from upper left: emergency overflow
basin, headworks facility, mural art created by PCRWRD employee,
construction of the BNRAS facility in 2000.
Originally placed into operation in 1975, the
Randolph Park WRF was temporarily removed from active service
in 1995. As part of PCRWRD'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.
Aerial view of the Randolph WRF, 2003
Outlying Facilities
Eight outlying facilities serve smaller towns and rural areas of
Pima County:
Arivaca Junction Wastewater Reclamation Facility
Avra Valley Wastewater Reclamation Facility
Corona de Tucson Wastewater Reclamation Facility
Green Valley Wastewater Reclamation Facility
Marana Wastewater Reclamation Facility
Mt. Lemmon Wastewater Reclamation Facility
Pima County Fairgrounds Wastewater Reclamation Facility
Rillito Wastewater Reclamation Facility
Clockwise from upper left: Mt. Lemmon WRF, Corona
de Tucson WRF, Green Valley WRF, Arivaca Junction WRF
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