Public Works
pw.lacounty.gov
Los Angeles County Public Counters are closed until further notice.

For Stormwater questions or submissions, email us at sw@pw.lacounty.gov. You can also mail submissions to:

Los Angeles County Public Works
Environmental Programs Division
900 S. Fremont Ave
Alhambra, CA 91803


If you have any questions, contact the Environmental Programs Public Counter at (626) 458-3517, Monday to Thursday, 8 am to 4 pm.

Stormwater Home

The Municipal National Pollutant Discharge Elimination System (NPDES) Permit is issued to the County of Los Angeles and 84 cities (minus Avalon, Lancaster, Long Beach and Palmdale) by the California Regional Water Quality Control Board, Los Angeles Region.

The Los Angeles County Public Works Stormwater Quality Division is the agency assigned as the Principal Permittee. Our goal is to improve the overall quality of life for residents of Los Angeles County.

If you have any questions or need forms or other information you may contact us at our public counter, via mail or phone.
Managed by the Los Angeles County Public Works, Environmental Programs Division
Toll Free Phone Number: 1(888) CLEAN LA
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