Guam NPDES Permits
EPA's Pacific Southwest (Region 9) issues all NPDES permits within the Pacific Island territory of Guam.
Draft and Final NPDES Permits
The tables below contain all final (i.e. active) and draft (i.e. proposed) NPDES permits issued by EPA's Pacific Southwest (Region 9) within Guam. 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 Permits
| Facility/Discharger/Permit | Location | Permit Number | Permit Status |
|---|---|---|---|
| General Permit for Bulk Fuel Storage Facilities in Guam | Guam | GUG000001 | Renewal |
Final Permits
| Facility/Discharger | Location | Permit Number | Permit Status | Effective Date | Expiration Date |
|---|---|---|---|---|---|
| Municipal Separate Storm Sewer System Department of the Navy (DON) |
Naval Base Guam | GUS040000 | Final | 2019/02/01 | 2024/01/31 |
| Municipal Separate Storm Sewer System (MS4) Guam Department of Public Works (DPW) |
DPW MS4 on the Island of Guam | GUS040001 | Final | 2019/02/01 | 2024/01/31 |
| General Permit for Bulk Fuel Storage Facilities in Guam | Guam | GUG000001 | Final | 2019/04/01 | 2024/03/31 |
| Agat-Santa Rita WWTP Guam Waterworks Authority |
Hagatna | GU0020222 | Final | 2020/01/01 | 2024/12/31 |
| Cabras Power Plant Guam Power Authority |
Piti | GU0020001 | Final | 2020/01/01 | 2025/01/31 |
| Agana/Hagatna Sewage Treatment Plant Guam Waterworks Authority |
Agana | GU0020087 | Final 301(h) Variance Request |
2020/01/01 | 2024/12/31 |
| Umatac-Merizo Sewage Treatment Plant Guam Waterworks Authority |
Merizo | GU0020273 | Final | 2020/01/01 | 2024/12/31 |
| Cabras Marine Corporation Cabras Marine Corporation |
Piti | GU0020397 | Final | 2018/08/01 | 2023/07/30 |
| Northern District Sewage Treatment Plant Guam Waterworks Authority |
Harmon Annex | GU0020141 | Final 301(h) Variance Request |
2020/01/01 | 2024/12/31 |
| Ugum Surface Water Treatment Plant Guam Waterworks Authority |
Talofofo | GU0020371 | Final | 2021/12/01 | 2026/11/30 |
| Fena Water Treatment Plant U.S. Navy, Naval Base Guam |
Santa Rita | GU0020389 | Final | 2022/06/01 | 2027/05/31 |
| Apra Harbor WWTP U.S. Navy, Naval Base Guam |
Santa Rita | GU0110019 | Final | 2025/05/01 | 2030/04/30 |
| Unitek Environmental Guam Waste Transfer Facility Unitek Environmental Guam |
Piti | GU0020346 | Final | 2017/09/01 | 2022/08/31 |
Public Notice
Public notices will appear here when available.
Contacts
Wastewater: Julie Song
song.julie@epa.gov
(415) 972-3035
Stormwater: Eugene Bromley
bromley.eugene@epa.gov
(415) 972-3510
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