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  • Wastewater Reclamation

    Images of RWRD

    Our mission is to protect the public health, safety, and the environment by providing quality service, environmental stewardship, and renewable resources. We design, manage and maintain over 3,500 miles of the sanitary sewer (conveyance) system and two metropolitan and six sub-regional water reclamation facilities.

    We are doing our part to protect the environment by recycling our most precious resource, water. Pima County uses its highly treated recycled, or reclaimed water, in a myriad of ways including irrigation of County parks, golf courses and ball fields.

    Utilizing reclaimed water for irrigation is a highly sustainable activity that saves groundwater and Colorado River water for drinking. Reclaimed water is also used to sustain and improve aquatic and wildlife habitats, for dust control and for long-term storage in our underground aquifers. Experts from around the world visit Pima County to study the regional reclaimed water system, which demonstrates effective water recycling techniques in the desert.

    Notice of Proposed Amendments to the 2018 Engineering Design Standards

    Pursuant to ARS §11-251.05, Pima County is providing notice that on or after January 2, 2018, the Pima County Board of Supervisors will consider amendments to Pima County Code Sections 13.16.010, 13.16.020, and 13.16.022.

    Notice of Proposed Rate Increase to the Commercial Billing Class

    Pursuant to ARS §11-251.13, Pima County is providing notice that on or after February 6, 2018, the Board of Supervisors will consider a rate increase of up to sixteen percent (16%) for the Commercial Billing Class. For more information, view notice here. Raftelis Rate Structure Study Report
    Major Sewer Project Information: www.sewerimprovements.com

    Our Vision

    To be an industry leader in the management and sustainability of the water reclamation cycle and other renewable resources.

    Our Mission

    To protect the public health, safety, and the environment by providing quality service, environmental stewardship, and renewable resources.

    Our Strategic Plan

    RWRD's updated five year Strategic Plan (FY 2014/15 - FY 2018/19) provides a guide to decision-making and resource management in pursuit if its organizational vision, mission and goals. It identifies, goals, and key performance indicators to drive success across six dimensions (pillars) of the organization and across three core business systems.


    Director's Office

    Planning and Engineering


    • Conveyance System Operations and Maintenance
    • Pumping System Operations and Maintenance
    • CCTV Program
    • Odor Control Program
    • Capital Improvement Projects
    • Conveyance Rehabilitation Projects
    • Vector (Roach) Control Program
    • Environmental and Safety
    • Conveyance System Management


    • Water Reclamation Facilities
      • Tres Rios
      • Agua Nueva
      • Avra Valley
      • Green Valley
      • Corona de Tucson  
      • Mt. Lemmon
      • Pima County Fairgrounds
      • Arivaca Junction

    Regional Optimization Master Plan

    Regional Optimization Master Plan (ROMP) is a master plan to allow the Pima County Regional Wastewater Reclamation Department (RWRD) to meet current environmental regulatory requirements mandated by the Clean Water Act.

    What is RWRD planning?

    RWRD is working to meet new environmental requirements mandated by the Arizona Department of Environmental Quality (ADEQ). ADEQ regulates our activities and the way we convey and treat the community’s sewage. ADEQ has directed us to meet more stringent water quality standards for our effluent. These standards are based on mandates set by the United States Environmental Protection Agency (EPA) through the Clean Water Act.

    What new standards does RWRD have to meet?

    ADEQ is mandating that RWRD decrease the amount of nitrogen and ammonia in our effluent.

    Why is it important to decrease nitrogen and ammonia levels in effluent?

    Although nitrogen is helpful in plant growth, it is harmful to aquatic life. Additionally, effluent that is discharged into the Santa Cruz River can percolate into our groundwater and increase nitrogen and ammonia levels in the aquifer. Although small levels of nitrogen naturally exist in the aquifer, high levels of nitrogen in drinking water can be harmful to children and unborn babies. No local water providers draw from the groundwater near the Roger Road and Tres Rios facilities, and the Regional Wastewater Reclamation Department performs regular monitoring of the groundwater in these areas.

    ROMP Project Updates

    En Español

    Strategic and Long-Range Planning

    Major Regional Planning Studies

    Treatment and Effluent

    Hydro Analysis Reports

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    Wastewater Reclamation

    201 N. Stone Ave., 8th Fl.
    Tucson, AZ 85701

    (520) 724-6500

    Sewer Emergencies

    (520) 724-6500

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