PlainWater

Public Water Systems

160 active public water systems in 08, tracked from EPA's Safe Drinking Water Information System (SDWIS) across all 50 states. See our methodology.

System Name Location Population Violations PFAS
Belcourt-Turtle Mtn Rural Water System Belcourt, 08 13,500 86 Clean
Pine Ridge Water System Pine Ridge, 08 7,482 114 Clean
Standing Rock Rural Water System Fort Yates, 08 6,839 82 Clean
Kyle Water System Pine Ridge, 08 6,526 35 Clean
Sicangu Mni Wiconi Rural Water System Rosebud, 08 5,610 43 Clean
Rosebud Rural Water System Rosebud, 08 5,500 132 Clean
Town of Browning Browning, 08 4,671 12 Clean
Spirit Lake Water Management RWS St. Michael, 08 4,400 53 Clean
Oglala RWS Pipeline Pine Ridge, 08 3,562 53 Clean
Uriah Heeps Spring Water System Ft. Duchesne, 08 3,550 503 Clean
Fort Washakie Fort Washakie, 08 3,520 406 Detected
Arapahoe Comm Water System Ethete, 08 3,100 585 -
Poplar, City Of Poplar, 08 3,025 18 -
Wolf Point City Of Wolf Point, 08 3,000 0 -
Lame Deer Water System Lame Deer, 08 2,605 155 -
New Town, City Of New Town, 08 2,528 10 -
St. Francis Rosebud, 08 2,450 39 Clean
Dakota Magic Casino Hankinson, 08 2,360 309 -
Wanblee East Pine Ridge, 08 2,179 8 -
Lower Brule Rural Water Supply System Lower Brule, 08 2,108 106 -
Fort Belknap Agency Water System Harlem, 08 2,100 575 -
Towaoc Water System Towoac, 08 2,020 98 -
Rocky Boy's Rural Water Box Elder, 08 2,000 130 -
Ethete Water System Fort Washakie, 08 1,950 639 -
Assiniboine & Sioux Rural Water System Poplar, 08 1,726 18 -
White Horse Creek Water System Pine Ridge, 08 1,690 1 -
Ignacio-Southern Ute Rural Water System Ignacio, 08 1,527 14 -
Two Medicine Water - East Glacier Browning, 08 1,504 64 -
Little Shell New Town, 08 1,500 15 -
Mission Water System Mission, 08 1,500 15 Clean
Wolf Creek School Batesland, 08 1,450 0 -
Rocky Boy Agency Water System Box Elder, 08 1,442 109 -
Fort Thompson Water System Fort Thompson, 08 1,357 224 -
Crow Agency Water System Crow Agency, 08 1,300 254 -
Four Bears Water System New Town, 08 1,200 191 -
Old Agency Water System Agency Village, 08 1,180 31 -
Mandaree Water Plant New Town, 08 1,034 72 -
White Shield Water Treatment Plant New Town, 08 952 56 -
Bison Range Pablo, 08 915 0 -
Parshall, City Of Parshall, 08 903 21 -
Hays/White Cow Canyon WS Harlem, 08 840 158 -
Whiterocks Water System Ft. Duchesne, 08 812 475 -
Wanblee Water System Pine Ridge, 08 773 55 -
Parshall-Lucky Mound New Town, 08 720 14 -
St Mary KOA Browing, 08 700 3 -
Arapahoe Industrial Park Fort Washakie, 08 650 295 -
Bedrockbabb Water System Browning, 08 645 43 -
Twin Buttes Water Plant New Town, 08 621 117 -
Blackfeet Community Hospital Browning, 08 600 42 -
Busby Community Water System Lame Deer, 08 535 64 -
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