Hill Canyon Wastewater Treatment Plant (HCTP)

In order to best utilize this valuable resource, the City, in conjunction with other governmental entities, has developed the Calleguas Creek Diversion Project.  This Project is the result of a long water rights process that was completed with the approval, by the State Water Resources Control Board, of the City’s appropriative water permit.  The project diverts reclaimed water discharged from the Hill Canyon Wastewater Treatment Plant for agricultural reuse on farmlands in the Santa Rosa Valley and the Oxnard Plain.  On its journey there, the water sustains important flora and fauna habitat.

This project will have substantial regional benefits in that it will allow downstream water users to reduce groundwater pumping.  This will also help reduce groundwater overdraft problems and prevent sea water intrusion in the Oxnard Plain.  The City now receives approximately $1,000,000 annually in reclaimed water sales.


HCTP creates a daily average of 10.5 million gallons of water a day.  This advanced tertiary treated water meets all criteria for unrestricted reclamation.