Waste Discharge Identification Number

Under the Clean Water Act’s National Pollutant Discharge Elimination System (NPDES) and California’s Porter-Cologne Water Quality Control Act, industrial facilities in California are required to obtain coverage under the state’s NPDES general permit for discharges associated with industrial storm water activities (General Industrial Permit) or justify why they are exempt. For regulated facilities, including manufacturing facilities, landfills, mining operations, steam electric power generating facilities, hazardous waste facilities, and oil and gas facilities, failure to obtain coverage under the General Industrial Permit is a potential violation of the Clean Water Act (in addition to state law), which could expose the owner or operator of the facility to potential civil penalties of up to $54,833 per day. Enforcement, however, largely is dependent upon agency inspections or enforcement by citizen groups. Based on estimates by the California Coastkeeper Alliance, many facilities in California may have failed to enroll in the industrial storm water permit program.
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