Riverside Water Quality Control Plant
The Riverside Water Quality Control Plant (RWQCP) is located at 5950 Acorn Street Riverside, CA 92504. The plant is currently being expanded and retrofitted to meet the needs of future generations. This
will also introduce several new technologies designed to produce high quality effluent water and increase the plant’s efficiency.
As currently constituted, the RWQCP consists of two separate treatment plants and one common tertiary filtration plant. These provide preliminary, primary, secondary and tertiary treatment for a rated capacity of 40 million gallons per day (MGD) or enough to fill up 61 Olympic size pools.
- Preliminary Treatment
Screens out large objects through mechanical bar screen
and removes rocks and other heavy objects through grit
- Primary Treatment
Sewage flows through clarifiers where solids settle to
the bottom while grease and oils rise to the surface and
are skimmed off.
- Secondary (Biological) Treatment
Air is injected into the water to encourage
microorganism growth that consumes waste suspended in
the water. The microorganisms eventually settle to the
bottom of the secondary sedimentation tank and are
returned to the process for additional use.
- Tertiary Treatment
Wastewater is passed through filters to remove viruses
and suspended particles.
Chlorine is injected to the wastewater to eliminate pathogens. The final water product is then "dechlorinated" to protect the habitat in the receiving Santa Ana River.
- Sludge Disposal
Sludge produced during various treatment steps is pumped to the digesters. The digested sludge is dewatered, dried, and transported off-site for Sludge Disposal.
Sewer Rates & Fees
Other Wastewater Resources
Riverside Water Quality Control Plant (RWQCP)
5950 Acorn Street
Riverside, CA 92504
The 311 Call Center is open during normal business hours to assist you.
After Hours Phone:
In case of an emergency or sanitary sewer overflow, please contact the RWQCP after hours number for immediate assistance.
|Hours: M-F 7:30 am-4:30 pm
|Closed on Weekends and Major Holidays
Printed from: http://riversideca.gov/publicworks/sewer/wqcp.asp