WRCRWA Wastewater Source Control Program

WRCRWA’s wastewater Source Control Program is a pollution control program federally mandated under the Clean Water Act to regulate the discharges of industrial and commercial facilities to the sanitary sewer system.


WRCRWA Sewer System Management Plan
WRCRWA Fats, Oils & Grease Program
Grease Interceptor Information
WRCRWA Wastewater Control Ordinance and Discharge Limits

For more information, contact:
Martyn Draper
Source Control Program Manager
Western Municipal Water District

Goals of the WRCRWA’s Source Control Program

Reduce the health and environmental risk of pollution caused by wastewater discharges to wastewater treatment plants
Prevent the introduction of pollutants into those plants that will pass through the treatment works and be incompatible with the environment
Prevent the introduction of pollutants into wastewater treatment plants that will interfere with treatment operations
Improve the feasibility of recycling and reclaiming the municipal and industrial wastewaters and biosolids
Enforce applicable EPA wastewater quality standards

The EPA has developed federal wastewater discharge limits for specific categorical processes. WRCRWA has also developed local limitations that generally apply to specific industrial processes.

WRCRWA issues industrial wastewater discharge permits to the following classes of industrial users:

Categorical Industrial Users (CIUs) - operating federally regulated processes subject to categorical pretreatment standards under Title 40 the Code of Federal regulations
Significant Industrial Users (SIUs) – operating larger facilities which, among other things, discharge more than 25,000 gallons per day of process wastewater to the sewer
Industrial Users (IU) – facilities which have the potential to adversely impact wastewater treatment facilities