North Dakota Water Quality
According to EPA Safe Drinking Water Information System (SDWIS), North Dakota has 318 active community water systems in this extract. PlainEnviro's health-based slice lists 185 violation records across 50 systems with at least one such row. These are historical EPA registry counts, not a statewide drinkability score.
Health-based violation records for 318 community water systems in North Dakota. Source: EPA Safe Drinking Water Information System (SDWIS).
Water Systems with Most Health-Based Records
| # | Water System | Health-Based Records | Health |
|---|---|---|---|
| 1 | TWIN BUTTES WATER PLANT New Town | 22 | Yes |
| 2 | MAXBASS CITY OF Maxbass | 21 | Yes |
| 3 | WHITE SHIELD WATER TREATMENT PLANT New Town | 18 | Yes |
| 4 | PARSHALL, CITY OF Parshall | 9 | Yes |
| 5 | MCLEAN-SHERIDAN WATER DISTRICT-SYSTEM 2 Turtle Lake | 8 | Yes |
| 6 | SUNDALE HUTTERIAN ASSOCIATION Milnor | 7 | Yes |
| 7 | FOUR BEARS WATER SYSTEM New Town | 6 | Yes |
| 8 | SPIRIT LAKE WATER MANAGEMENT RWS St. Michael | 6 | Yes |
| 9 | CATHAY CITY OF Cathay | 5 | Yes |
| 10 | PARSHALL-LUCKY MOUND New Town | 4 | Yes |
| 11 | RAINBOW ESTATES Bismarck | 4 | Yes |
| 12 | OBERON CITY OF Oberon | 4 | Yes |
| 13 | SOURIS CITY OF Souris | 4 | Yes |
| 14 | FLAXTON CITY OF Flaxton | 4 | Yes |
| 15 | GOODRICH CITY OF Goodrich | 4 | Yes |
| 16 | HARWOOD CITY OF Harwood | 3 | Yes |
| 17 | ELLENDALE CITY OF Ellendale | 3 | Yes |
| 18 | BELCOURT-TURTLE MTN RURAL WATER SYSTEM Belcourt | 2 | Yes |
| 19 | DAKOTA MAGIC CASINO Hankinson | 2 | Yes |
| 20 | SOLEN, CITY OF Solen | 2 | Yes |
| 21 | LINCOLN CITY OF Lincoln | 2 | Yes |
| 22 | DAVENPORT CITY OF Davenport | 2 | Yes |
| 23 | FARGO CITY OF Fargo | 2 | Yes |
| 24 | NEW HRADEC WATERWORKS New Hradec | 2 | Yes |
| 25 | ROBINSON CITY OF Robinson | 2 | Yes |
| 26 | WILLOWBANK COLONY Edgeley | 2 | Yes |
| 27 | TOWNER CITY OF Towner | 2 | Yes |
| 28 | ZAP CITY OF Zap | 2 | Yes |
| 29 | DRAYTON CITY OF Drayton | 2 | Yes |
| 30 | KENSAL CITY OF Kensal | 2 | Yes |
| 31 | WOODWORTH CITY OF Woodworth | 2 | Yes |
| 32 | STANDING ROCK RURAL WATER SYSTEM Fort Yates | 1 | Yes |
| 33 | REEDER CITY OF Reeder | 1 | Yes |
| 34 | NOME CITY OF Nome | 1 | Yes |
| 35 | MADDOCK CITY OF Maddock | 1 | Yes |
| 36 | BOTTINEAU CITY OF Bottineau | 1 | Yes |
| 37 | LANSFORD CITY OF Lansford | 1 | Yes |
| 38 | DAKOTA ADVENTIST ACADEMY Bismarck | 1 | Yes |
| 39 | ARGUSVILLE CITY OF Argusville | 1 | Yes |
| 40 | COUNTRY ACRES WATER CO Horace | 1 | Yes |
| 41 | FORBES CITY OF Forbes | 1 | Yes |
| 42 | FORTUNA CITY OF Fortuna | 1 | Yes |
| 43 | STRASBURG CITY OF Strasburg | 1 | Yes |
| 44 | NORTHWOOD CITY OF Northwood | 1 | Yes |
| 45 | NEW ENGLAND CITY OF New England | 1 | Yes |
| 46 | LEHR CITY OF Lehr | 1 | Yes |
| 47 | ALEXANDER CITY OF Alexander | 1 | Yes |
| 48 | WATFORD RESIDENCE SUITES Watford City | 1 | Yes |
| 49 | MAX CITY OF Max | 1 | Yes |
| 50 | UNDERWOOD CITY OF Underwood | 1 | Yes |
Most Common Contaminants in North Dakota
| Contaminant | Violations | Systems Affected |
|---|---|---|
| TTHM | 90 | 12 |
| Lead and Copper Rule | 26 | 22 |
| Revised Total Coliform Rule | 20 | 9 |
| Arsenic | 13 | 3 |
| Total Haloacetic Acids (HAA5) | 9 | 2 |
| LEAD AND COPPER RULE REVISIONS | 8 | 8 |
| Coliform (TCR) | 7 | 5 |
| Chloramine | 5 | 3 |
| Combined Radium (-226 and -228) | 2 | 1 |
| Bromate | 2 | 1 |
| Groundwater Rule | 2 | 1 |
| Long Term 2 Enhanced Surface Water Treatment Rule | 1 | 1 |
Cities with Water Quality Issues
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About This Data
Water quality data is from the EPA Safe Drinking Water Information System (SDWIS). Health-based violations include Maximum Contaminant Level (MCL) and Treatment Technique (TT) violations. Only community water systems (CWS) in North Dakota are included.
Source: U.S. Environmental Protection Agency, SDWIS Federal Reporting Services
Read our methodology - how this data is sourced, computed, and verified.