Oklahoma utilities 101 to 167.
Each serves 150 to 4,863 people, as it reports to EPA. Your ZIP code finds yours faster.
101 to 167 of 167, by people served
| Utility | Based in | Serves | Regulated PFAS | Health-based violations since 2016 |
|---|---|---|---|---|
| Pontotoc Co RWD # 7 | Ada | 4,863 | None found | 0 |
| Pushmataha Co. RWD #3 | Antlers | 4,825 | None found | 93 |
| Murray Co RWD # 1 | Sulphur | 4,800 | None found | 1 |
| Holdenville | Holdenville | 4,732 | None found | 69 |
| Fort Gibson | Fort Gibson | 4,700 | None found | 2 |
| Leflore Co. RWD #2 | Pocola | 4,700 | None found | 41 |
| Altus AFB | Altus | 4,617 | None found | 19 |
| Marlow Municipal Authority | Marlow | 4,600 | None found | 1 |
| Tuttle | 4,500 | PFBS | 1 | |
| Sayre | Sayre | 4,375 | None found | 0 |
| Wagoner Co. RWD #9 | Wagoner | 4,363 | None found | 32 |
| Broken Bow Pwa | Broken Bow | 4,320 | None found | 15 |
| Wagoner Co. RWD #5 | Coweta | 4,251 | PFOS, PFHxS, PFBS | 0 |
| Craig Co RWD #2 | Vinita | 4,250 | None found | 4 |
| Pontotoc Co RWD # 8 | Ada | 4,250 | None found | 0 |
| Adamson RWD #8 | Hartshorne | 4,221 | None found | 39 |
| Harrah | Harrah | 4,190 | None found | 6 |
| Mayes Co RWD #4 | Pryor | 4,183 | None found | 1 |
| Muskogee Co. RWD #5 | Muskogee | 4,135 | None found | 106 |
| Ketchum Pwa | Ketchum | 4,025 | None found | 0 |
| Nichols Hills | Nichols Hills | 4,020 | None found | 3 |
| Okla Ordnance Works Authority | Pryor | 4,000 | PFOS | 1 |
| Nowata Municipal Authority | Nowata | 3,971 | PFOS, PFHxS | 36 |
| Frederick | Frederick | 3,940 | PFHxS | 16 |
| Mannford | Mannford | 3,935 | None found | 1 |
| Grady Co RWD #6 | Amber | 3,930 | None found | 1 |
| Choctaw UA | 3,926 | None found | 0 | |
| Caddo Co RWD #3 | Carnegie | 3,900 | None found | 1 |
| Leflore Co. RWD #18 | Wister | 3,870 | None found | 17 |
| McCurtain Co. RWD #1 | Haworth | 3,842 | None found | 30 |
| Pawhuska | Pawhuska | 3,800 | None found | 21 |
| Mayes Co RWD # 6 | Big Cabin | 3,750 | None found | 0 |
| Hobart | Hobart | 3,746 | None found | 0 |
| Spencer | Spencer | 3,746 | None found | 1 |
| Bristow Municipal Authority | Bristow | 3,700 | None found | 1 |
| McIntosh Co. RWD #8 (Texanna) | Eufaula | 3,574 | None found | 40 |
| Consolidated RWD #3 Creek Co | Sapulpa | 3,500 | None found | 1 |
| Dewey Public Works Authority | Dewey | 3,490 | None found | 4 |
| Checotah Pwa | Checotah | 3,481 | None found | 16 |
| Wewoka Public Works Authority | Wewoka | 3,450 | None found | 135 |
| Madill | Madill | 3,410 | None found | 52 |
| Cherokee Co. RWD #11 | Hulbert | 3,395 | PFBS | 0 |
| Rogers Co RWD # 8 | Claremore | 3,375 | None found | 0 |
| Mayes Co RWD # 5 | Adair | 3,360 | None found | 1 |
| Elgin Pwa | Elgin | 3,300 | Not sampled | 1 |
| Heavener Utility Auth - Psg | Heavener | 3,000 | None found | 24 |
| Watonga | Watonga | 2,816 | None found | 8 |
| Eufaula Pwa | Eufaula | 2,766 | None found | 72 |
| Muskogee Co. RWD #1 (Oktaha) | Oktaha | 2,280 | None found | 56 |
| McCurtain Co. RWD #7 | Garvin | 1,847 | None found | 19 |
| Okfuskee Co. RWD #3 | Okemah | 1,823 | None found | 9 |
| Okla Christian University | Edmond | 1,800 | None found | 1 |
| Garvin Co RWD #4 | Pauls Valley | 1,340 | None found | 3 |
| Pittsburg Co. RWD #16 | McAlester | 1,268 | None found | 13 |
| Wagoner Co. RWD #7 (New) | Okay | 1,110 | None found | 22 |
| Hydro Pwa | Hydro | 1,060 | None found | 3 |
| McCurtain Co. RWD #9 | Valliant | 999 | None found | 17 |
| Eastern Shawnee | Wyandotte | 796 | None found | 0 |
| Pittsburg Co. RWD #11 (Kiowa) | McAlester | 790 | None found | 11 |
| Kay Co RWD #5 (Dale Water Corp) | Newkirk | 765 | PFOS, PFHxS, PFBS | 23 |
| Ottawa Co RWD # 4 | Fairland | 652 | None found | 0 |
| Alfalfa Co RWS & Swmd #1 North | Byron | 600 | None found | 0 |
| Ramona Public Works Authority | Ramona | 564 | None found | 3 |
| Delaware Co RWD # 7 | Afton | 400 | None found | 12 |
| Randlett Pwa | Randlett | 320 | None found | 11 |
| Hallett Public Works Authority | Hallett | 168 | None found | 1 |
| Dewey Co RWD #2 | Camargo | 150 | None found | 1 |
Utilities EPA sampled under UCMR 5, plus any other community system serving 3,300 people or more. Smaller systems appear in ZIP code results. People served is what each utility reports to EPA. Data: EPA SDWIS 2026 Q2 and UCMR 5.