An official website of the United States government.

This is not the current EPA website. To navigate to the current EPA website, please go to This website is historical material reflecting the EPA website as it existed on January 19, 2021. This website is no longer updated and links to external websites and some internal pages may not work. More information »

NPDES Permits in California (excluding Tribal Permits)

EPA’s Pacific Southwest (Region 9) issues NPDES permits for any discharges into federal ocean waters. All other permits are issued by the California Environmental Protection Agency (CalEPA). See the table below for final and draft permits issued by EPA.

For State-Issued Permits: CalEPA State Water Resources Control Board NPDES Permit ProgramExit
See Also: California Tribal Lands NPDES Permits

Draft and Final Permits

The table below contains all final (i.e. active) and draft (i.e. proposed) NPDES permits issued by EPA’s Pacific Southwest (Region 9) within California. It includes permits for individual facilities, general permits, and stormwater permits. Click on the facility/permit name to view the permit and supporting documents.

Plus (+) IconIf the “+” (plus) icon is visible in the table, click for more information.

Draft Permits

Facility / Discharger Location Permit Number Permit Status Comment Period End Date
Rose Canyon Sustainable Aquaculture Project
Rose Canyon Fisheries, Inc. (RCF)
San Diego N/A Draft 2016/01/15

Plus (+) IconIf the “+” (plus) icon is visible in the table, click for more information.


Final Permits

Facility / Discharger Location Permit Number Permit Status Effective Date Expiration Date
California Offshore Oil and Gas General Permit Offshore CAG280000 Final 2014/03/01 2019/02/28
E.W. Blom Point Loma Metropolitan WWTP and Ocean Outfall
City of San Diego
San Diego CA0107409 Final
301(h) Variance Request
2017/10/01 2022/09/03
Edward C. Little Water Recycling Plant
West Basin Municipal Water District
El Segundo CA0063401 Final 2018/09/01 2023/08/31
Hyperion Treatment Plant
City of Los Angeles
Playa del Rey CA0109991 Final 2017/04/01 2022/03/31
Oceanside Water Pollution Control Plant and Collection System City and County of San Francisco CA0037681 Final 2020/02/07 (uncontested conditions)
2021/02/01 (contested conditions)
Reclamation Plant No. 1 and Treatment Plant No. 2,
Collection System, and Outfalls
Exit(181 pp, 3.6 MB, About PDF)
Orange County Sanitation District
Huntington Beach
Fountain Valley
CA0110604 Final 2012/07/20 2017/07/19