Results from entry points (water leaving treatment, not household taps) of public water systems sampled under EPA's Fifth Unregulated Contaminant Monitoring Rule. Click a county to see every water system serving it, or turn on service areas and click a location to see the systems that serve that spot.
41 of the 325 public water systems listed for North Dakota were sampled. Sorted by the highest single result relative to EPA's 2024 limits. Each name links to a page with all of that system's results. All 325 North Dakota systems, including those not tested · Download all North Dakota results (CSV, gzip)
| System | PWSID | City | Population | PFOA (ppt) | PFOS (ppt) | HI | Highest single result |
|---|---|---|---|---|---|---|---|
| Cass Rural Water District Fargo | ND0901483 | Kindred | 4,242 | <MRL | <MRL | 0 | Other PFAS detected |
| Central Plains Water District | ND5201309 | Fessenden | 3,504 | <MRL | <MRL | 0 | Other PFAS detected |
| Grafton City Of | ND5000408 | Grafton | 4,284 | <MRL | <MRL | 0 | Other PFAS detected |
| Grand Forks Regional Wtp | ND1800410 | Grand Forks | 57,339 | <MRL | <MRL | 0 | Other PFAS detected |
| North Prairie Rwd-System 1&2 | ND5101125 | Minot | 7,748 | <MRL | <MRL | 0 | Other PFAS detected |
| Northwest Rural Water District | ND5301079 | Williston | 5,102 | <MRL | <MRL | 0 | Other PFAS detected |
| South Central Regional Water District | ND0801154 | Bismarck | 3,700 | <MRL | <MRL | 0 | Other PFAS detected |
| Agassiz Water Users District | ND1801056 | Gilby | 3,438 | <MRL | <MRL | 0 | No PFAS detected |
| Barnes Rural Water District | ND0201058 | Valley City | 4,938 | <MRL | <MRL | 0 | No PFAS detected |
| Beach City Of | ND1700059 | Beach | 981 | <MRL | <MRL | 0 | No PFAS detected |
| Belcourt-Turtle Mtn Rural Water System | 083890023 | Belcourt | 13,500 | <MRL | <MRL | 0 | No PFAS detected |
| Beulah City Of | ND2900074 | Beulah | 3,058 | <MRL | <MRL | 0 | No PFAS detected |
| Bismarck City Of | ND0800080 | Bismarck | 72,417 | <MRL | <MRL | 0 | No PFAS detected |
| Cass Rural Water District-Phase I | ND0901060 | Kindred | 3,658 | <MRL | <MRL | 0 | No PFAS detected |
| Cass Rural Water District-Phase Ii | ND0901124 | Kindred | 1,700 | <MRL | <MRL | 0 | No PFAS detected |
| Devils Lake City Of | ND3600231 | Devils Lake | 7,141 | <MRL | <MRL | 0 | No PFAS detected |
| Dickinson City Of | ND4500242 | Dickinson | 25,679 | <MRL | <MRL | 0 | No PFAS detected |
| East Central Regional Wd-Gf | ND1801062 | Thompson | 5,995 | <MRL | <MRL | 0 | No PFAS detected |
| Fargo City Of | ND0900336 | Fargo | 120,762 | <MRL | <MRL | 0 | No PFAS detected |
| Greater Ramsey Water District | ND3601424 | Devils Lake | 5,280 | <MRL | <MRL | 0 | No PFAS detected |
| Grenora City Of | ND5300425 | Grenora | 244 | <MRL | <MRL | 0 | No PFAS detected |
| Jamestown City Of | ND4700498 | Jamestown | 15,427 | <MRL | <MRL | 0 | No PFAS detected |
| Larimore City Of | ND1800550 | Larimore | 1,346 | <MRL | <MRL | 0 | No PFAS detected |
| Lincoln City Of | ND0800570 | Lincoln | 4,257 | <MRL | <MRL | 0 | No PFAS detected |
| Mandan City Of | ND3000596 | Mandan | 21,769 | <MRL | <MRL | 0 | No PFAS detected |
| Minot City Of | ND5100660 | Minot | 48,743 | <MRL | <MRL | 0 | No PFAS detected |
| Missouri West Water System | ND3001431 | Mandan | 4,303 | <MRL | <MRL | 0 | No PFAS detected |
| Northeast Rwd- North Valley Branch | ND3401128 | Cavalier | 3,422 | <MRL | <MRL | 0 | No PFAS detected |
| Omnd Water Treatment Plant | ND2901491 | Dickinson | 4,168 | <MRL | <MRL | 0 | No PFAS detected |
| South Central Rwd North Burleigh | ND0801502 | Bismarck | 10,400 | <MRL | <MRL | 0 | No PFAS detected |
| South Central Rwd-Emmons | ND1501653 | Bismarck | 3,650 | <MRL | <MRL | 0 | No PFAS detected |
| Southeast Wud (East) | ND3901068 | Mantador | 4,225 | <MRL | <MRL | 0 | No PFAS detected |
| Southwest Water Authority | ND4501434 | Dickinson | 8,537 | <MRL | <MRL | 0 | No PFAS detected |
| Spirit Lake Water Management Rws | 083890025 | St. Michael | 4,400 | <MRL | <MRL | 0 | No PFAS detected |
| Standing Rock Rural Water System | 084690510 | Fort Yates | 6,839 | <MRL | <MRL | 0 | No PFAS detected |
| Stutsman Rural Water District | ND4701303 | Jamestown | 5,550 | <MRL | <MRL | 0 | No PFAS detected |
| Valley City City Of | ND0200958 | Valley City | 6,585 | <MRL | <MRL | 0 | No PFAS detected |
| Wahpeton City Of | ND3900973 | Wahpeton | 7,766 | <MRL | <MRL | 0 | No PFAS detected |
| Watford City City Of | ND2700990 | Watford City | 6,390 | <MRL | <MRL | 0 | No PFAS detected |
| West Fargo City Of | ND0900999 | West Fargo | 34,858 | <MRL | <MRL | 0 | No PFAS detected |
| Williston City Of | ND5301012 | Williston | 26,426 | <MRL | <MRL | 0 | No PFAS detected |
Highest single result for each system; PFOA and PFOS in ppt (ng/L). Entry-point samples, not tap water; screening comparisons, not compliance determinations.