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  • Wastewater Reclamation

    Have you ever wondered what happens to your water after you flush the toilet, take a bath or wash dishes?

    This video explains the treatment process at Pima County Regional Wastewater Reclamation Department’s (RWRD) largest metropolitan treatment plant. Tres Rios Wastewater Reclamation facility (WRF) - formerly named Ina Road WRF - has the capacity to treat up to 50 million gallons a day. On a typical day, RWRD treats approximately 30 million gallons of wastewater at this facility.
    Wastewater treatment is a complex process, which involves combined physical, mechanical, chemical and biological processes and operations to remove solids, organic matter and nutrients from wastewater. After the treatment process, the treated wastewater (called effluent) is used for golf courses, public parks and other reuse. A portion of our effluent is also dechlorinated and discharged into the Santa Cruz River.
    Our mission is to protect the public health, safety, and the environment by providing quality service, environmental stewardship and renewable resources.
    RWRD provides design, management and maintenance of the sanitary sewer system, including the conveyance and treatments systems (3,400+ miles of sewer, two metropolitan wastewater treatment plants and six sub-regional facilities).

    Ordinance 2016-29

    Revisions to the Pima County Code: Chapter 13.24 - Sanitary Sewer User Fees was approved unanimously by the Board of Supervisors on May 3, 2016.

    Sewer Outreach Subsidy Program

    Do you or someone you know qualify for a discount on your sewer bill?
    Click here for more information.

    Major Sewer Project Information: www.sewerimprovements.com

    Services

    Residential Information

    Commercial/Industrial Users

    Educational Information

    Engineering Services

    Development Permitting Process Overview

    Design Standards, Specifications & Details

    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.

    En Español

    Divisions

    Director's Office

    Planning and Engineering

    Conveyance

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

    Treatment

    • 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

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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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