North Dakota tap water quality
318 community water systems
3.2%
exceed lead action level
(10/316 systems)
(10/316 systems)
0%
PFOA/PFOS detected
(0/41 systems)
(0/41 systems)
Largest water systems
Lead is the LCR 90th-percentile result; a value above 0.015 mg/L exceeds the
EPA action level. “—” means no lead sample is on file for that system.
| System | City | Population | Lead (p90) |
|---|---|---|---|
| FARGO CITY OF | FARGO | 120,762 | 0.0062 mg/L |
| BISMARCK CITY OF | BISMARCK | 72,417 | 0.0145 mg/L |
| GRAND FORKS REGIONAL WTP | GRAND FORKS | 57,339 | 0.0082 mg/L |
| MINOT CITY OF | MINOT | 48,743 | 0.0149 mg/L |
| WEST FARGO CITY OF | WEST FARGO | 34,858 | 0.0090 mg/L |
| WILLISTON CITY OF | WILLISTON | 26,426 | 0.0010 mg/L |
| DICKINSON CITY OF | DICKINSON | 25,679 | 0.0063 mg/L |
| MANDAN CITY OF | MANDAN | 21,769 | 0.0101 mg/L |
| JAMESTOWN CITY OF | JAMESTOWN | 15,427 | 0.0118 mg/L |
| BELCOURT-TURTLE MTN RURAL WATER SYSTEM | 13,500 | 0.0053 mg/L | |
| SOUTH CENTRAL RWD NORTH BURLEIGH | 10,400 | 0.0037 mg/L | |
| SOUTHWEST WATER AUTHORITY | DICKINSON | 8,537 | 0.0022 mg/L |
| WAHPETON CITY OF | WAHPETON | 7,766 | 0.0119 mg/L |
| NORTH PRAIRIE RWD-SYSTEM 1&2 | 7,748 | 0.0050 mg/L | |
| DEVILS LAKE CITY OF | DEVILS LAKE | 7,141 | 0.0180 mg/L |
| STANDING ROCK RURAL WATER SYSTEM | 6,839 | 0.0059 mg/L | |
| VALLEY CITY CITY OF | VALLEY CITY | 6,585 | 0.0034 mg/L |
| WATFORD CITY CITY OF | WATFORD CITY | 6,390 | 0.0093 mg/L |
| EAST CENTRAL REGIONAL WD-GF | 5,995 | 0.0044 mg/L | |
| STUTSMAN RURAL WATER DISTRICT | 5,550 | 0.0044 mg/L | |
| GREATER RAMSEY WATER DISTRICT | 5,280 | 0.0044 mg/L | |
| NORTHWEST RURAL WATER DISTRICT | 5,102 | 0.0032 mg/L | |
| BARNES RURAL WATER DISTRICT | VALLEY CITY | 4,938 | 0.0041 mg/L |
| SPIRIT LAKE WATER MANAGEMENT RWS | 4,400 | 0.0011 mg/L | |
| MISSOURI WEST WATER SYSTEM | 4,303 | 0.0022 mg/L | |
| GRAFTON CITY OF | GRAFTON | 4,284 | 0.0135 mg/L |
| LINCOLN CITY OF | LINCOLN | 4,257 | 0.0036 mg/L |
| CASS RURAL WATER DISTRICT FARGO | 4,242 | 0.0042 mg/L | |
| SOUTHEAST WUD (EAST) | ABERCROMBIE | 4,225 | 0.0044 mg/L |
| OMND WATER TREATMENT PLANT | 4,168 | 0.0036 mg/L | |
| MCKENZIE COUNTY WRD | 3,895 | 0.0025 mg/L | |
| SOUTH CENTRAL REGIONAL WATER DISTRICT | 3,700 | 0.0027 mg/L | |
| CASS RURAL WATER DISTRICT-PHASE I | 3,658 | 0.0040 mg/L | |
| SOUTH CENTRAL RWD-EMMONS | 3,650 | 0.0023 mg/L | |
| CENTRAL PLAINS WATER DISTRICT | 3,504 | 0.0057 mg/L | |
| AGASSIZ WATER USERS DISTRICT | 3,438 | 0.0068 mg/L | |
| NORTHEAST RWD- NORTH VALLEY BRANCH | 3,422 | 0.0032 mg/L | |
| BEULAH CITY OF | BEULAH | 3,058 | 0.0047 mg/L |
| WALSH RURAL WATER DISTRICT | 3,000 | 0.0108 mg/L | |
| RUGBY CITY OF | RUGBY | 2,876 | 0.0098 mg/L |
| EAST CENTRAL REGIONAL WD-TRAILL | HILLSBORO | 2,800 | 0.0052 mg/L |
| NORTH PRAIRIE RWD-SYSTEM III | 2,742 | 0.0083 mg/L | |
| NEW TOWN, CITY OF | 2,528 | 0.0013 mg/L | |
| CASSELTON CITY OF | CASSELTON | 2,513 | 0.0161 mg/L |
| TRI-COUNTY WATER DISTRICT | LAKOTA | 2,501 | 0.0067 mg/L |
| NORTHEAST RWD-LANGDON BRANCH | LANGDON | 2,450 | 0.0024 mg/L |
| HAZEN CITY OF | HAZEN | 2,411 | 0.0045 mg/L |
| DAKOTA MAGIC CASINO | 2,360 | 0.0116 mg/L | |
| BOTTINEAU CITY OF | BOTTINEAU | 2,211 | 0.0042 mg/L |
| TIOGA CITY OF | TIOGA | 2,202 | 0.0009 mg/L |
| LISBON CITY OF | LISBON | 2,154 | 0.0255 mg/L |
| CARRINGTON CITY OF | CARRINGTON | 2,065 | 0.0083 mg/L |
| LANGDON CITY OF | LANGDON | 1,878 | 0.0022 mg/L |
| MAYVILLE CITY OF | MAYVILLE | 1,858 | 0.0096 mg/L |
| OAKES CITY OF | OAKES | 1,856 | 0.0121 mg/L |
| GARRISON RURAL WATER DISTRICT | 1,805 | 0.0054 mg/L | |
| MCLEAN-SHERIDAN WATER DISTRICT-SYSTEM 1 | 1,800 | 0.0055 mg/L | |
| HARVEY CITY OF | HARVEY | 1,783 | 0.0117 mg/L |
| CASS RURAL WATER DISTRICT-PHASE II | 1,700 | 0.0061 mg/L | |
| CASS RURAL WATER DISTRICT-PHASE III | 1,682 | 0.0030 mg/L | |
| SOUTHEAST WUD (CENTRAL-LISBON) | 1,675 | 0.0011 mg/L | |
| HORACE CITY OF | HORACE | 1,641 | 0.0027 mg/L |
| HILLSBORO CITY OF | HILLSBORO | 1,603 | 0.0052 mg/L |
| LITTLE SHELL | 1,500 | 0.0027 mg/L | |
| BOWMAN CITY OF | BOWMAN | 1,470 | 0.0030 mg/L |
| GARRISON CITY OF | GARRISON | 1,453 | 0.0049 mg/L |
| CROSBY CITY OF | CROSBY | 1,406 | 0.0120 mg/L |
| PARK RIVER CITY OF | PARK RIVER | 1,403 | 0.0036 mg/L |
| ELLENDALE CITY OF | ELLENDALE | 1,394 | 0.0058 mg/L |
| NEW ROCKFORD CITY OF | NEW ROCKFORD | 1,391 | 0.0093 mg/L |
| SURREY CITY OF | SURREY | 1,365 | 0.0024 mg/L |
| LARIMORE CITY OF | LARIMORE | 1,346 | 0.0079 mg/L |
| ALEXANDER CITY OF | ALEXANDER | 1,335 | 0.0130 mg/L |
| MAPLETON CITY OF | MAPLETON | 1,320 | 0.0051 mg/L |
| CAVALIER CITY OF | CAVALIER | 1,302 | 0.0033 mg/L |
| UPPER SOURIS WATER DISTRICT-SYSTEM I | 1,296 | 0.0054 mg/L | |
| ROLLA CITY OF | ROLLA | 1,280 | 0.0058 mg/L |
| SOUTHEAST WUD (WEST) | 1,275 | 0.0054 mg/L | |
| WASHBURN CITY OF | WASHBURN | 1,246 | 0.0109 mg/L |
| HETTINGER CITY OF | HETTINGER | 1,226 | 0.0047 mg/L |
| FOUR BEARS WATER SYSTEM | 1,200 | 0.0019 mg/L | |
| PARSHALL, CITY OF | 1,200 | 0.0009 mg/L | |
| STANLEY CITY OF | STANLEY | 1,138 | 0.0068 mg/L |
| DAKOTA RURAL WATER DISTRICT SOUTH | 1,135 | 0.0101 mg/L | |
| CANDO CITY OF | CANDO | 1,115 | 0.0100 mg/L |
| LINTON CITY OF | LINTON | 1,097 | 0.0045 mg/L |
| VELVA CITY OF | VELVA | 1,084 | 0.0159 mg/L |
| ALL SEASONS WD-SYSTEM V | 1,075 | 0.0000 mg/L | |
| DAKOTA RURAL WATER DISTRICT NORTH | SHARON | 1,070 | 0.0063 mg/L |
| BURLINGTON CITY OF | BURLINGTON | 1,060 | 0.0111 mg/L |
| MANDAREE WATER PLANT | 1,034 | 0.0046 mg/L | |
| BELFIELD CITY OF | BELFIELD | 1,013 | 0.0100 mg/L |
| R & T WATER SYSTEM | RAY | 1,003 | 0.0039 mg/L |
| WALHALLA CITY OF | WALHALLA | 996 | 0.0095 mg/L |
| COOPERSTOWN CITY OF | COOPERSTOWN | 984 | 0.0134 mg/L |
| BEACH CITY OF | BEACH | 981 | 0.0100 mg/L |
| KENMARE CITY OF | KENMARE | 961 | 0.0126 mg/L |
| WHITE SHIELD WATER TREATMENT PLANT | 952 | 0.0019 mg/L | |
| WISHEK CITY OF | WISHEK | 952 | 0.0075 mg/L |
| RAY CITY OF | RAY | 950 | 0.0015 mg/L |