WRP 4 Recycled Water Improvement Project Phase I

Within the next 5 years, CVWD plans to expand its recycled water infrastructure at Wastewater Reclamation Plant 4 (WRP 4) in Thermal to serve agricultural users and other area landscape irrigation customers. 

Using more recycled water will conserve local groundwater and reduce demand for imported Colorado River water. 

Phase 1 includes: 

  • Designing and constructing a one million gallon per day (MGD) tertiary facility to deliver a blend of recycled water and canal water to three customers south of WRP 4 located on the downstream end of Irrigation Lateral 99.8- 0.51 (approximately 480 acres). 
  • Treatment will consist of a 1.0 MGD packaged cloth disk filtration plant with onsite infrastructure expandable to 2.5 MGD. Currently, the customers irrigate using canal water.  
  • Canal and recycled water blend would be delivered to customers from WRP 4. 

Phase I - Project Cost: $39 million 

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Additional Phases: The Project is being designed so that it may be expanded, with the ultimate goal being to use the entire supply of recycled water at this facility with no discharges. 

Two additional proposed phases consist of the following:  

  • Construction of additional equipment to treat up to 2.5 MGD of tertiary treated water with onsite infrastructure expandable to 9.9 MGD and expansion of the distribution system to serve 2.5 MGD
  • Incorporating additional equipment to treat up to 9.9 MGD with no additional on-site infrastructure; however, it will require expansion of the distribution system to serve 10 MGD.