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Storm Water - Municipal Permits

The Los Angeles Water Board regulates discharges from medium and large municipal separate storm sewer systems (MS4s) through the Los Angeles County, Long Beach, and Ventura County MS4 Permits. These permits are issued under the National Pollutant Discharge Elimination System (NPDES) Program



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Additional Information


Program Supervisor
Ridgeway, Ivar
(213) 620-2150
Senior Environmental Scientist