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Environmental Compliance Ordinances & Regulations

The City of Riverside has a National Pollutant Discharge Elimination System (NPDES) Permit issued by the Santa Ana Regional Water Quality Control Board to discharge wastewater from the Riverside Regional Water Quality Control Plant (Plant).

A component of the National Pollutant Discharge Elimination System (NPDES) Program, the National Pretreatment Program was developed by EPA to control the discharge of pollutants from POTWs. The statutory authority for the National Pretreatment Program lies in the Federal Water Pollution Control Act of 1972, which was amended by Congress in 1977 and renamed the Clean Water Act .

effluent qualityTo meet the requirements of the 1977 amendments, EPA developed the General Pretreatment Regulations for Existing and New Sources of Pollution [40 Code of Federal Regulations (CFR) Part 403]. The National Pretreatment Program consists of three types of national pretreatment standards established by regulation that apply to industrial users (IUs). These include prohibited discharges, categorical standards, and local limits.

  • Prohibited discharges, comprised of general and specific prohibitions, apply to all IUs regardless of the size or type of operation.
  • Categorical standards apply to specific process wastewater discharges from particular industrial categories.
  • Local limits are site-specific limits developed by the POTW to enforce general and specific prohibitions on IUs.

The Environmental Compliance Section derives its authority from the Riverside Municipal Code 14.12. This ordinance is used to determine an industry's compliance with pretreatment regulations.

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General Information
Riverside Water Quality Control Plant (RWQCP)
5950 Acorn Street
Riverside, CA 92504

Phone: (951) 826-5311
The 311 Call Center is open during normal business hours to assist you.

After Hours Phone: (951) 351-6140
In case of an emergency or sanitary sewer overflow, please contact the RWQCP after hours number for immediate assistance.

Admin Hours:
Hours: M-F 7:30 am-4:30 pm  
Closed on Weekends and Major Holidays
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