PFAS in North Dakota drinking water
EPA's final UCMR 5 data covers 38 public water systems in North Dakota, serving about 559,032 people. PFAS turned up in 7 of them (18%). 0 averaged above at least one EPA limit at a sampling point.
Every tested system in North Dakota
Largest first. PFOA and PFOS columns show the average at each system's worst sampling point; EPA's limit for each is 4 ppt. Filter by name:
| Water system | People | PFOA | PFOS | PFAS found | Result |
|---|---|---|---|---|---|
| City of Fargo · Fargo | 120,762 | - | - | 0 | None found |
| City of Bismarck · Bismarck | 72,417 | - | - | 0 | None found |
| Grand Forks Regional Wtp · Grand Forks | 57,339 | - | - | 1 | Below limits |
| City of Minot · Minot | 48,743 | - | - | 0 | None found |
| City of West Fargo · West Fargo | 34,858 | - | - | 0 | None found |
| City of Williston · Williston | 26,426 | - | - | 0 | None found |
| City of Dickinson · Dickinson | 25,679 | - | - | 0 | None found |
| City of Mandan · Mandan | 21,769 | - | - | 0 | None found |
| City of Jamestown · Jamestown | 15,427 | - | - | 0 | None found |
| South Central Rwd North Burleigh · Bismarck | 10,400 | - | - | 0 | None found |
| Southwest Water Authority · Dickinson | 8,537 | - | - | 0 | None found |
| City of Wahpeton · Wahpeton | 7,766 | - | - | 0 | None found |
| North Prairie Rwd-system 1&2 · Minot | 7,748 | - | - | 1 | Below limits |
| City of Devils Lake · Devils Lake | 7,141 | - | - | 0 | None found |
| City of Valley City · Valley City | 6,585 | - | - | 0 | None found |
| City of Watford City · Watford City | 6,390 | - | - | 0 | None found |
| East Central Regional Wd-gf · Thompson | 5,995 | - | - | 0 | None found |
| Stutsman Rural Water District · Jamestown | 5,550 | - | - | 0 | None found |
| Greater Ramsey Water District · Devils Lake | 5,280 | - | - | 0 | None found |
| Northwest Rural Water District · Williston | 5,102 | - | - | 1 | Below limits |
| Barnes Rural Water District · Valley City | 4,938 | - | - | 0 | None found |
| Missouri West Water System · Mandan | 4,303 | - | - | 0 | None found |
| City of Grafton · Grafton | 4,284 | - | - | 1 | Below limits |
| City of Lincoln · Lincoln | 4,257 | - | - | 0 | None found |
| Cass Rural Water District Fargo · Kindred | 4,242 | - | - | 1 | Below limits |
| Southeast Wud (east) · Mantador | 4,225 | - | - | 0 | None found |
| Omnd Water Treatment Plant · Dickinson | 4,168 | - | - | 0 | None found |
| South Central Regional Water District · Bismarck | 3,700 | - | - | 1 | Below limits |
| Cass Rural Water District-phase I · Kindred | 3,658 | - | - | 0 | None found |
| South Central Rwd-emmons · Bismarck | 3,650 | - | - | 0 | None found |
| Central Plains Water District · Fessenden | 3,504 | - | - | 1 | Below limits |
| Agassiz Water Users District · Gilby | 3,438 | - | - | 0 | None found |
| Northeast Rwd- North Valley Branch · Cavalier | 3,422 | - | - | 0 | None found |
| City of Beulah · Beulah | 3,058 | - | - | 0 | None found |
| Cass Rural Water District-phase Ii · Kindred | 1,700 | - | - | 0 | None found |
| City of Larimore · Larimore | 1,346 | - | - | 0 | None found |
| City of Beach · Beach | 981 | - | - | 0 | None found |
| City of Grenora · Grenora | 244 | - | - | 0 | None found |
On a private well in North Dakota?
EPA's program only covers public systems. Private wells are never part of UCMR 5, so the only way to know is to test. Our well testing guide covers which lab tests to order, and the best well water systems covers what to install once you have results.
Cite this page
Well & Tap. "PFAS in North Dakota drinking water: results for 38 systems." Data: U.S. EPA UCMR 5, final release August 2026. https://wellandtap.com/pfas/north-dakota/
Source: EPA UCMR 5 final occurrence data (August 2026); population from EPA SDWIS. Method.