NPDES Permits in California (Non-Tribal)
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 Program
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.
Draft NPDES Permits
| Facility / Discharger | Location | Permit Number | Permit Status | Comment Period End Date |
|---|---|---|---|---|
| Vessel Testing a Pilot OceanWell | Off the coast of California in federal waters | CA0000018 | Draft | May 27, 2025 |
Final NPDES 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 | 2022/09/30 |
| Edward C. Little Water Recycling Plant West Basin Municipal Water District |
El Segundo | CA0063401 | Final | 2024/02/01 | 2029/01/31 |
| Hyperion Treatment Plant City of Los Angeles |
Los Angeles | CA0109991 | Final | 2023/05/01 | 2028/04/30 |
| 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) |
2024/10/31 |
| Orange County Sanitation District Reclamation Plant No. 1 and Treatment Plant No. 2 | Fountain Valley and Huntington Beach | CA0110604 | Final | 2021/08/01 | 2026/07/31 |
Public Notice
-
Proposed Issuance of NPDES Permit for Vessel Testing a Pilot OceanWell off the Coast of California in Federal Waters and CWA §401 Water Quality Certification
EPA Region 9 is issuing notice of proposed action under the Clean Water Act (CWA) to issue a NPDES permit for the Vessel Testing a Pilot OceanWell located off the coast of California in federal waters under NPDES Permit No. CA0000018.
- Comments Due Date:
- Geographic Locations: Southwest, California
Contact
Amelia Whitson (whitson.amelia@epa.gov)
(415) 972-3216
Related Content
- California State Water Resources Board: Drinking Water and Wastewater Treatment Facilities in California - Historic Context and Research Design for National Register Evaluation (pdf)
-
Residual Designation Authority: Learn more about the 2024 final designation of stormwater discharges from certain commercial, industrial and institutional facilities in two Los Angeles watersheds.
EPA Pacific Southwest Resources
- Arizona Tribal Lands (excluding Navajo Nation)
- Navajo Nation Lands
(AZ, NM, UT) - California Non-Tribal
- California Tribal Lands
- Hawai'i
- Nevada
- Pacific Island Territories
- Stormwater Program
- Pretreatment Program