Tres Rios Wastewater Reclamation Facility Capacity and Effluent Quality Upgrade (AZ)

Pima County Regional Wastewater Reclamation Department

Jacobs and MWH Constructors

Construction Management at-Risk


Tres Rios 1The Tres Rios WRF Capacity and Effluent Quality Upgrade Project is the largest construction project completed in Pima County’s history. It satisfies the Clean Water Act’s stringent environmental regulatory requirements, meets RWRD’s long-term service needs, and augments precious water supplies for this growing desert community.

Download the Water Design-Build Council's project spotlight to learn more about this project, including: 

  • How the team met an ambitious schedule to come in under budget and three months ahead of regulatory deadlines
  • The amazing archeological discovery unearthed during this project
  • Planning and execution challenges that had to be overcome


Learn more by downloading this project spotlight >>>