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Regulatory Information
The Federal Water Pollution Control Act prohibits the discharge of any pollutant to navigable waters from a point source unless the discharge is authorized by a National Pollutant Discharge Elimination System (NPDES) permit. The 1987 passage of the Water Quality Act established NPDES permit requirements for discharges of stormwater. The NPDES permit program controls water pollution by regulating point sources that discharge pollutants into waters of the United States.

Industrial facilities and construction sites are regulated by the Regional Water Quality Control Board and State Water Resources Control Board, through general stormwater permits. Most industrial, manufacturing or transportation businesses that store materials, products or equipment outdoors, or conduct vehicle washing or process operations outdoors are required to obtain coverage under the State Water Resources Control Board’s General Industrial Activities Stormwater Permit. For more information about this permit, visit www.swrcb.ca.gov/stormwtr/industrial.html
or contact your local stormwater coordinator.
If your business conducts construction activities, including clearing, grading, stockpiling or excavation that results in soil disturbances of at least one acre, you are subject to the State Water Resources Control Board’s General Construction Activities Stormwater Permit. To find out more about this stormwater permit for construction, visit:www.swrcb.ca.gov/stormwtr/construction.html
Cities and counties are regulated through permits issued by the Regional Boards. Since 1990, operators of large stormdrain systems such as San Bernardino County’s have been required to:
• Develop a stormwater management program designed to prevent harmful pollutants
from being dumped or washed by stormwater runoff, into the stormwater system,
then discharged into local water bodies; and
• Obtain a National Pollutant Discharge Elimination System (NPDES) permit.

The NPDES permit programs in California are administered by the State Water Resources Control Board and by nine regional boards that issue NPDES permits and enforce regulations within their respective region.

“If your business conducts construction activities” and “Cities and counties are regulated through permits”