North Dakota tap water
0 of 37 North Dakota water systems with full PFAS testing (0%) averaged above a 2024 federal PFAS level at one or more sampling points.
- 303 active community water systems in the EPA file; 32 serve 3,300+ people and have a full PFAS set.
- 20 systems had at least one health-based violation since 2021-10-26.
- 1 systems report a lead 90th percentile above 15 ppb (some results are old; check each system page).
Largest systems
| System | People served | PFAS above a 2024 level? | Health-based violations since 2021-10-26 |
|---|---|---|---|
| Fargo City of | 120,762 | No | 0 |
| Grand Forks Regional Wtp | 57,339 | No | 0 |
| Minot City of | 48,743 | No | 0 |
| West Fargo City of | 34,858 | No | 0 |
| Williston City of | 26,426 | No | 0 |
| Dickinson City of | 25,679 | No | 0 |
| Mandan City of | 21,769 | No | 0 |
| Jamestown City of | 15,427 | No | 0 |
All 3 utilities with a page in North Dakota
- Fargo City of 120,762
- Grand Forks Regional Wtp 57,339
- Minot City of 48,743
Why not "the state's water quality"? You drink from one utility, not a state. Rollups count systems, not people, so one large utility counts the same as a small one. Use the system pages for your actual water.
Not medical or legal advice. UCMR 5 results are screening data, not compliance determinations.
Sources and freshness
Public-water-system facts, violations and lead/copper results: EPA ECHO SDWA download (SDWIS snapshot 2026-10-13). PFAS and lithium results: EPA UCMR 5 final data (sampling 2023–2025). Both are U.S. government works, downloaded 2026-10-26. Numbers are computed by the published method; the same fields are in the open data files.