Drinking water / ND
PFAS in North Dakota drinking water
38 North Dakota public water systems tested under UCMR5. 7 detected at least one PFAS compound; 31 detected none at the reporting thresholds. Values are the highest single result per compound, in ng/L (parts per trillion). The federal limit for PFOA and PFOS is 4 ng/L.
| Water system | Serves | Highest results (ng/L) | Reading |
|---|---|---|---|
| CASS RURAL WATER DISTRICT FARGO ND0901483 | Cass | PFBA 7.3 | detected |
| CENTRAL PLAINS WATER DISTRICT ND5201309 | Wells | PFBA 7.1 | detected |
| GRAFTON CITY OF ND5000408 | Walsh | PFBA 5.9 | detected |
| GRAND FORKS REGIONAL WTP ND1800410 | Grand Forks | PFBA 10.4 | detected |
| NORTH PRAIRIE RWD-SYSTEM 1&2 ND5101125 | Ward | PFPeA 3 | detected |
| NORTHWEST RURAL WATER DISTRICT, ND ND5301079 | Williams | PFBA 6.3 | detected |
| SOUTH CENTRAL REGIONAL WATER DISTRICT ND0801154 | Burleigh | PFBA 5.9 | detected |
* exceeds the final federal MCL for that compound. Detections of compounds whose limits EPA proposed to rescind in May 2026 are shown for information.
Systems with no PFAS detected
31 tested systems reported no PFAS above the laboratory reporting limits. Each has its own page with its sampling detail.
- AGASSIZ WATER USERS DISTRICT
- BARNES RURAL WATER DISTRICT
- BEACH CITY OF
- BEULAH CITY OF
- BISMARCK CITY OF
- CASS RURAL WATER DISTRICT-PHASE I
- CASS RURAL WATER DISTRICT-PHASE II
- DEVILS LAKE CITY OF
- DICKINSON CITY OF
- EAST CENTRAL REGIONAL WD-GF
- FARGO CITY OF
- GREATER RAMSEY WATER DISTRICT
- GRENORA CITY OF
- JAMESTOWN CITY OF
- LARIMORE CITY OF
- LINCOLN CITY OF
- MANDAN CITY OF
- MINOT CITY OF
- MISSOURI WEST WATER SYSTEM
- NORTHEAST RWD- NORTH VALLEY BRANCH
- OMND WATER TREATMENT PLANT
- SOUTH CENTRAL RWD NORTH BURLEIGH
- SOUTH CENTRAL RWD-EMMONS
- SOUTHEAST WUD (EAST)
- SOUTHWEST WATER AUTHORITY
- STUTSMAN RURAL WATER DISTRICT
- VALLEY CITY CITY OF
- WAHPETON CITY OF
- WATFORD CITY CITY OF
- WEST FARGO CITY OF
- WILLISTON CITY OF
A detection at the system level does not tell you what reaches one specific tap: levels vary by entry point, treatment train and plumbing. A certified lab test of your own tap settles it. Testing and treatment options