South Dakota Water Systems
512 community water systems in South Dakota, ranked by violation count. Data from EPA Safe Drinking Water Information System (SDWIS).
Water Systems
512
Total Violations
1,192
Health Violations
260 systems
Population Served
927,151
South Dakota operates 512 community water systems regulated by the EPA Safe Drinking Water Information System (SDWIS) under the Safe Drinking Water Act. Together these utilities serve an estimated 927,151 residents, each filing compliance results with the state's primacy agency and, for federally listed contaminants, with the U.S. Environmental Protection Agency.
Across the state, SDWIS records contain 1,192 total violations, of which 260 systems carry at least one active health-based violation, a Maximum Contaminant Level (MCL) exceedance or treatment-technique failure. That represents roughly 51% of South Dakota systems.
Violation counts reflect both infrastructure realities and reporting diligence, a state with more small rural systems will accumulate more monitoring-type violations without necessarily delivering worse water. Health-based violations are the stronger safety signal. A past violation does not itself indicate current unsafe water; utilities must notify customers, remediate, and publish an annual Consumer Confidence Report. All numbers below draw directly from the federal SDWIS record.
Which water systems have violations? (253)
| # | System Name | Violations | Health |
|---|---|---|---|
| 1 | SHIRT TAIL GULCH DEVELOPMENT Black Hawk | 187 | Yes |
| 2 | CEDAR GULCH 2 Piedmont | 57 | Yes |
| 3 | OAK MOUNTAIN COUNTRY ESTATES Black Hawk | 41 | Yes |
| 4 | VIEWFIELD RURAL WATER SYSTEM Black Hawk | 32 | Yes |
| 5 | MEADOW CREST SANITARY DISTRICT Spearfish | 32 | Yes |
| 6 | GOLDEN VALLEY WATER COMPANY Black Hawk | 21 | Yes |
| 7 | OWANKA RURAL WATER SYSTEM Black Hawk | 20 | Yes |
| 8 | BOX ELDER Box Elder | 19 | Yes |
| 9 | GARDEN CITY Garden City | 15 | Yes |
| 10 | ABERDEEN Aberdeen | 14 | Yes |
| 11 | NORTH MARTIN WATER SYSTEM Pine Ridge | 14 | Yes |
| 12 | SUMMIT Summit | 13 | Yes |
| 13 | BUFFALO GAP Buffalo Gap | 13 | Yes |
| 14 | YANKTON Yankton | 12 | Yes |
| 15 | ROSHOLT Rosholt | 12 | Yes |
| 16 | WALNUT PARK Spearfish | 10 | Yes |
| 17 | MASKELL, VILLAGE OF Vermillion | 10 | Yes |
| 18 | WAGNER Wagner | 9 | Yes |
| 19 | PINE HILLS PARK Summerset | 9 | Yes |
| 20 | HORSESHOE ACRES WATER ASSOCIATION Piedmont | 9 | Yes |
| 21 | MORRISTOWN Morristown | 9 | Yes |
| 22 | REYNOLDS COURT Spearfish | 9 | Yes |
| 23 | SPRINGFIELD Springfield | 8 | Yes |
| 24 | DUPREE Dupree | 8 | Yes |
| 25 | SOUTH SHORE South Shore | 8 | Yes |
| 26 | WORTHING Worthing | 7 | Yes |
| 27 | EDGEMONT Edgemont | 7 | Yes |
| 28 | LAKE ANDES Lake Andes | 7 | Yes |
| 29 | SELBY Selby | 7 | Yes |
| 30 | MONTROSE Montrose | 7 | Yes |
| 31 | WILLOW LAKE Willow Lake | 7 | Yes |
| 32 | TIMBERLAND PARK Yankton | 7 | Yes |
| 33 | SHERIDAN LAKE HIGHLANDS, INC. Piedmont | 7 | Yes |
| 34 | PARKSTON Parkston | 6 | Yes |
| 35 | KIMBALL Kimball | 6 | Yes |
| 36 | CORSICA Corsica | 6 | Yes |
| 37 | COLOME Colome | 6 | Yes |
| 38 | BRISTOL Bristol | 6 | Yes |
| 39 | NISLAND Nisland | 6 | Yes |
| 40 | PRAIRIE HAVEN SUBDIVISION Black Hawk | 6 | Yes |
| 41 | UTICA Mission Hill | 6 | Yes |
| 42 | FLANDREAU Flandreau | 5 | Yes |
| 43 | WANBLEE EAST Pine Ridge | 5 | Yes |
| 44 | LAKE PRESTON Lake Preston | 5 | Yes |
| 45 | HUMBOLDT Humboldt | 5 | Yes |
| 46 | HAY CREEK WATER COMPANY Belle Fourche | 5 | Yes |
| 47 | VEBLEN Veblen | 5 | Yes |
| 48 | PRAIRIE ACRES NORTH Rapid City | 5 | Yes |
| 49 | TULARE Miller | 5 | Yes |
| 50 | WESSINGTON Wessington | 5 | Yes |
| 51 | PRAIRIE ACRES SOUTH Rapid City | 5 | Yes |
| 52 | CONDE Conde | 5 | Yes |
| 53 | CANOVA Canova | 5 | Yes |
| 54 | LAKESIDE WATER USERS DISTRICT Owanka | 5 | Yes |
| 55 | CEDAR GULCH 1 Rapid City | 5 | Yes |
| 56 | BY WATER DISTRICT Tabor | 4 | Yes |
| 57 | AURORA Aurora | 4 | Yes |
| 58 | FALL RIVER WUD Oral | 4 | Yes |
| 59 | VALLEY SPRINGS Valley Springs | 4 | Yes |
| 60 | HILL CITY Hill City | 4 | Yes |
| 61 | EUREKA Eureka | 4 | Yes |
| 62 | ESTELLINE Estelline | 4 | Yes |
| 63 | EMERY Emery | 4 | Yes |
| 64 | BRYANT Bryant | 4 | Yes |
| 65 | PRAIRIEWOOD PROPERTY OWNERS Aberdeen | 4 | Yes |
| 66 | EGAN Egan | 4 | Yes |
| 67 | SUNNYSIDE MOBILE HOME PARK II Piedmont | 4 | Yes |
| 68 | DRY CREEK ESTATES Black Hawk | 4 | Yes |
| 69 | MISSION HILL Mission Hill | 4 | Yes |
| 70 | BATESLAND Martin | 4 | Yes |
| 71 | DEER MOUNTAIN SANITARY DISTRICT Lead | 4 | Yes |
| 72 | MIDLAND Midland | 4 | Yes |
| 73 | PLEASANT VALLEY ESTATES Aberdeen | 4 | Yes |
| 74 | WALLACE Wallace | 4 | Yes |
| 75 | BESTGEN ADDITION WATER COMPANY Piedmont | 4 | Yes |
| 76 | SIPHON HILL WATER ASSOCIATION Rapid City | 4 | Yes |
| 77 | FAIRBURN WATER ASSOCIATION Fairburn | 4 | Yes |
| 78 | WHISPERING WILLOWS Black Hawk | 4 | Yes |
| 79 | SOUTHBROOK ESTATES Brookings | 4 | Yes |
| 80 | PINE RIDGE WATER SYSTEM Pine Ridge | 3 | Yes |
| 81 | EAGLE BUTTE Eagle Butte | 3 | Yes |
| 82 | GREGORY Gregory | 3 | Yes |
| 83 | NORTHDALE SANITARY DISTRICT Piedmont | 3 | Yes |
| 84 | CENTERVILLE Centerville | 3 | Yes |
| 85 | MINA LAKE SANITARY DISTRICT Aberdeen | 3 | Yes |
| 86 | ALEXANDRIA Alexandria | 3 | Yes |
| 87 | WOONSOCKET Woonsocket | 3 | Yes |
| 88 | WHITE White | 3 | Yes |
| 89 | JEFFERSON Jefferson | 3 | Yes |
| 90 | LEOLA Leola | 3 | Yes |
| 91 | HERREID Herreid | 3 | Yes |
| 92 | WHITE LAKE White Lake | 3 | Yes |
| 93 | PINE LAKE HILLS Sioux Falls | 3 | Yes |
| 94 | BISON Bison | 3 | Yes |
| 95 | WOUNDED KNEE DISTRICT SCHOOL Manderson | 3 | Yes |
| 96 | WAKONDA Wakonda | 3 | Yes |
| 97 | CHANCELLOR Chancellor | 3 | Yes |
| 98 | HENRY Henry | 3 | Yes |
| 99 | WOUNDED KNEE WATER SYSTEM Pine Ridge | 3 | Yes |
| 100 | VALLEY VIEW WATER COMPANY Piedmont | 3 | Yes |
| 101 | GARY Gary | 3 | Yes |
| 102 | LETCHER Letcher | 3 | Yes |
| 103 | MAXWELL COLONY Scotland | 3 | Yes |
| 104 | JAVA Java | 3 | Yes |
| 105 | VALE SANITARY DISTRICT Vale | 3 | Yes |
| 106 | LAKEVIEW COLONY Lake Andes | 3 | Yes |
| 107 | MCINTOSH Mcintosh | 3 | Yes |
| 108 | HURON COLONY Huron | 3 | Yes |
| 109 | RIVERSIDE MOBILE HOME COURT Spearfish | 3 | Yes |
| 110 | COPPER OAKS I New Underwood | 3 | Yes |
| 111 | STRATFORD Stratford | 3 | Yes |
| 112 | SUNRISE HOMEOWNERS ASSOCIATION Spearfish | 3 | Yes |
| 113 | BEULAH LAND WATER Sioux Falls | 3 | Yes |
| 114 | HIGHLAND HILLS Rapid City | 3 | Yes |
| 115 | TOLSTOY Tolstoy | 3 | Yes |
| 116 | BROOKINGS MUNICIPAL UTILITIES Brookings | 2 | Yes |
| 117 | WATERTOWN MUNICIPAL UTILITIES Watertown | 2 | Yes |
| 118 | KYLE WATER SYSTEM Pine Ridge | 2 | Yes |
| 119 | ROSEBUD RURAL WATER SYSTEM Rosebud | 2 | Yes |
| 120 | BLACK HAWK WATER USER DISTRICT Black Hawk | 2 | Yes |
| 121 | ST. FRANCIS Rosebud | 2 | Yes |
| 122 | FORT THOMPSON WATER SYSTEM Fort Thompson | 2 | Yes |
| 123 | CLARK Clark | 2 | Yes |
| 124 | DE SMET De Smet | 2 | Yes |
| 125 | PARKER Parker | 2 | Yes |
| 126 | VIBORG Viborg | 2 | Yes |
| 127 | ELKTON Elkton | 2 | Yes |
| 128 | CASTLEWOOD Castlewood | 2 | Yes |
| 129 | WHITE RIVER White River | 2 | Yes |
| 130 | CROW CREEK TRIBAL SCHOOL Stephan | 2 | Yes |
| 131 | MOUNT VERNON Mount Vernon | 2 | Yes |
| 132 | WILMOT Wilmot | 2 | Yes |
| 133 | WESTON HEIGHTS HOMEOWNERS ASSOCIATIO Piedmont | 2 | Yes |
| 134 | GAYVILLE Gayville | 2 | Yes |
| 135 | PRAIRIE ACRES LLC Rapid City | 2 | Yes |
| 136 | FLORENCE Florence | 2 | Yes |
| 137 | PINE RIDGE HOSPITAL Pine Ridge | 2 | Yes |
| 138 | MOUNTAIN PLAINS 2 HOMEOWNERS ASSOC Spearfish | 2 | Yes |
| 139 | PUKWANA Chamberlain | 2 | Yes |
| 140 | VALLEY VIEW ESTATES Sioux Falls | 2 | Yes |
| 141 | ALPENA Miller | 2 | Yes |
| 142 | HECLA Hecla | 2 | Yes |
| 143 | DOLAND Doland | 2 | Yes |
| 144 | PARADISE WATER COMPANY LLC Lead | 2 | Yes |
| 145 | SPENCER Spencer | 2 | Yes |
| 146 | HOSMER Hosmer | 2 | Yes |
| 147 | SPEARFISH VALLEY MOBILE ESTATES Spearfish | 2 | Yes |
| 148 | RAMONA Arlington | 2 | Yes |
| 149 | DELMONT Delmont | 2 | Yes |
| 150 | HIGH MEADOWS WATER COMPANY Black Hawk | 2 | Yes |
| 151 | PEEVER FLATS WATER SYSTEM Agency Village | 2 | Yes |
| 152 | LESTERVILLE Lesterville | 2 | Yes |
| 153 | SPINK COLONY Frankfort | 2 | Yes |
| 154 | HERMOSA WATER USERS ASSOCIATION Hermosa | 2 | Yes |
| 155 | BADGER Badger | 2 | Yes |
| 156 | PONDEROSA MOBILE HOME RANCH Rapid City | 2 | Yes |
| 157 | D & E WATER COMPANY Black Hawk | 2 | Yes |
| 158 | CRESBARD Cresbard | 2 | Yes |
| 159 | EDEN Eden | 2 | Yes |
| 160 | WESTPORT SANITARY DISTRICT Aberdeen | 2 | Yes |
| 161 | FRUITDALE Fruitdale | 2 | Yes |
| 162 | LOURIE LANE HOMEOWNERS ASSOC Spearfish | 2 | Yes |
| 163 | PEACEFUL PINES II Black Hawk | 2 | Yes |
| 164 | WAKPAMNI WATER SYSTEM Pine Ridge | 2 | Yes |
| 165 | LIBERTY HILLS COMMUNITY Hot Springs | 2 | Yes |
| 166 | VEBLEN FLATS Agency Village | 2 | Yes |
| 167 | CAVALRY TRAILS HOMEOWNER ASSOCIATION Piedmont | 2 | Yes |
| 168 | SACORA MOBILE HOME PARK Black Hawk | 2 | Yes |
| 169 | WARD Ward | 2 | Yes |
| 170 | PILLAR PEAK Black Hawk | 2 | Yes |
| 171 | NORTH ALLEN WATER SYSTEM Pine Ridge | 2 | Yes |
| 172 | HIDDEN VALLEY WATER ASSOCIATION INC Rapid City | 2 | Yes |
| 173 | SIOUX FALLS Sioux Falls | 1 | Yes |
| 174 | WEB WATER DEVELOPMENT ASSOCIATION Aberdeen | 1 | Yes |
| 175 | SICANGU MNI WICONI RURAL WATER SYSTEM Rosebud | 1 | Yes |
| 176 | SIOUX RURAL WATER SYSTEM Watertown | 1 | Yes |
| 177 | OGLALA RWS PIPELINE Pine Ridge | 1 | Yes |
| 178 | LOWER BRULE RURAL WATER SUPPLY SYSTEM Lower Brule | 1 | Yes |
| 179 | MARTIN Martin | 1 | Yes |
| 180 | FREEMAN Freeman | 1 | Yes |
| 181 | BALTIC Baltic | 1 | Yes |
| 182 | PLATTE Platte | 1 | Yes |
| 183 | GARRETSON Garretson | 1 | Yes |
| 184 | BRITTON Britton | 1 | Yes |
| 185 | CHAPEL LANE WATER COMPANY Rapid City | 1 | Yes |
| 186 | PIEDMONT Piedmont | 1 | Yes |
| 187 | WONDERLAND HOMES Rapid City | 1 | Yes |
| 188 | COLTON Colton | 1 | Yes |
| 189 | FAULKTON Faulkton | 1 | Yes |
| 190 | HIGHMORE Highmore | 1 | Yes |
| 191 | SUN VALLEY DEVELOPMENT Rapid City | 1 | Yes |
| 192 | NEWELL Newell | 1 | Yes |
| 193 | KADOKA Kadoka | 1 | Yes |
| 194 | RED CLOUD SCHOOL Pine Ridge | 1 | Yes |
| 195 | TIMBER LAKE Timber Lake | 1 | Yes |
| 196 | WAUBAY Waubay | 1 | Yes |
| 197 | PRESHO Presho | 1 | Yes |
| 198 | BOWDLE Bowdle | 1 | Yes |
| 199 | LAKESIDE ESTATES Aberdeen | 1 | Yes |
| 200 | WOLSEY Wolsey | 1 | Yes |
| 201 | TABOR Tabor | 1 | Yes |
| 202 | HERMOSA-OLD SYSTEM Hermosa | 1 | Yes |
| 203 | TERRY TROJAN WATER DISTRICT Black Hawk | 1 | Yes |
| 204 | HURLEY Hurley | 1 | Yes |
| 205 | THE RANCH AT BLACK GAP Rapid City | 1 | Yes |
| 206 | HOVEN Hoven | 1 | Yes |
| 207 | ETHAN Ethan | 1 | Yes |
| 208 | STAGEBARN SANITARY DISTRICT Rapid City | 1 | Yes |
| 209 | BONESTEEL Bonesteel | 1 | Yes |
| 210 | CARRIAGE HILLS Rapid City | 1 | Yes |
| 211 | HAPPY HOLIDAY RV RESORT Rapid City | 1 | Yes |
| 212 | NEW EFFINGTON New Effington | 1 | Yes |
| 213 | PICKSTOWN Pickstown | 1 | Yes |
| 214 | FREDERICK Frederick | 1 | Yes |
| 215 | PLAINSVIEW MOBILE MANOR Black Hawk | 1 | Yes |
| 216 | WAGNER SOUTH HOUSING WATER SYSTEM Wagner | 1 | Yes |
| 217 | BOULDER PARK WATER USERS ASSOCIATION Rapid City | 1 | Yes |
| 218 | MELLETTE Redfield | 1 | Yes |
| 219 | ROSLYN Roslyn | 1 | Yes |
| 220 | WAGNER NORTH HOUSING WATER SYSTEM Wagner | 1 | Yes |
| 221 | EAST WINDS COURT, INC. Yankton | 1 | Yes |
| 222 | OAKS WATER USERS ASSOCIATION New Underwood | 1 | Yes |
| 223 | RUSHMORE RANCH ESTATES Black Hawk | 1 | Yes |
| 224 | TIMBERWOOD PARK ESTATES Piedmont | 1 | Yes |
| 225 | DEERFIELD COLONY Ipswich | 1 | Yes |
| 226 | ISABEL Isabel | 1 | Yes |
| 227 | NORTHVILLE Northville | 1 | Yes |
| 228 | BRENTWOOD COLONY Faulkton | 1 | Yes |
| 229 | B & J MOBILE HOME PARK Rapid City | 1 | Yes |
| 230 | MIDLAND HEIGHTS Rapid City | 1 | Yes |
| 231 | EAST RIDGE ACRES Rapid City | 1 | Yes |
| 232 | OELRICHS Oelrichs | 1 | Yes |
| 233 | SKYLINE HEIGHTS Sioux Falls | 1 | Yes |
| 234 | ELK CREEK VILLAGE Rapid City | 1 | Yes |
| 235 | JOBEE ACRES Aberdeen | 1 | Yes |
| 236 | SUNRISE COLONY Summit | 1 | Yes |
| 237 | PONDEROSA RIDGE Rapid City | 1 | Yes |
| 238 | HUTTERVILLE COLONY SOUTH DAKOTA INC Stratford | 1 | Yes |
| 239 | SPRING CANYON WATER COMPANY Piedmont | 1 | Yes |
| 240 | SPEARFISH MEADOWS Rapid City | 1 | Yes |
| 241 | ROLLING MEADOWS Aberdeen | 1 | Yes |
| 242 | COUNTRY CLUB ESTATES Hot Springs | 1 | Yes |
| 243 | SHAMROCK COLONY Carpenter | 1 | Yes |
| 244 | ROCK RIDGE COURT Rapid City | 1 | Yes |
| 245 | WOLF CREEK WATER SYSTEM Pine Ridge | 1 | Yes |
| 246 | CROOKED OAKS CANYON HOMEOWNERS Black Hawk | 1 | Yes |
| 247 | ELK VALLEY RANCHETTES Rapid City | 1 | Yes |
| 248 | DEBERG WELL USERS ASSOCIATION Spearfish | 1 | Yes |
| 249 | ELK CREEK VALLEY VIEW ASSOC Rapid City | 1 | Yes |
| 250 | EAGLE WATER COMPANY Black Hawk | 1 | Yes |
| 251 | GOLDEN HILLS HOMES Rapid City | 1 | Yes |
| 252 | NORTH HERMOSA WUD Hermosa | 1 | Yes |
| 253 | HAPPY HOLIDAY WATER ASSOCIATION Rapid City | 1 | Yes |
Systems with No Violations (247)
247 water systems in South Dakota have zero recorded violations. Showing the 50 largest by population served.
RAPID CITY (72,009) MITCHELL (15,651) HURON (14,263) PIERRE (14,091) MINNEHAHA COMMUNITY WATER CORP (13,435) SPEARFISH (12,193) MID-DAKOTA RURAL WATER (11,833) VERMILLION (11,695) RAPID VALLEY SANITARY DISTRICT (11,408) BRANDON (11,048) HARRISBURG (10,297) ELLSWORTH AFB (9,100) TEA (7,381) STURGIS (7,020) KINGBROOK I RURAL WATER SYSTEM (6,455) RANDALL COMMUNITY WATER DISTRICT (6,248) BROOKINGS-DEUEL RURAL WATER SYSTEM (6,200) MADISON (6,191) LINCOLN COUNTY RURAL WATER SYSTEM (5,965) BIG SIOUX COMMUNITY WATER SYSTEM (5,800) BROWN-DAY-MARSHALL RWS (5,673) BELLE FOURCHE (5,617) SOUTH LINCOLN RURAL WATER SYSTEM (5,250) GRANT-ROBERTS RURAL WATER SYSTEM (5,050) TRIPP COUNTY WATER USER DISTRICT (4,860) CLAY RURAL WATER SYSTEM (4,780) WR/LJ - MNI WICONI (4,720) TM RURAL WATER DISTRICT (4,250) DAKOTA DUNES CID (3,700) DELL RAPIDS (3,633) MILBANK (3,544) DAVISON RURAL WATER SYSTEM INC (3,485) HARTFORD (3,396) HOT SPRINGS (3,395) MOBRIDGE (3,261) CANTON (3,066) NORTH SIOUX CITY (3,042) LEAD (2,982) WINNER (2,921) KINGBROOK III RURAL WATER SYSTEM (2,888) AURORA-BRULE RURAL WATER SYSTEM (2,750) KINGBROOK II RURAL WATER SYSTEM (2,715) HANSON RURAL WATER SYSTEM (2,685) LENNOX (2,571) WR/LJ - NORTH STANLEY COUNTY (2,492) SISSETON (2,479) CHAMBERLAIN (2,473) BERESFORD (2,359) VOLGA (2,340) CLARK RURAL WATER SYSTEM (2,325) +197 more
All Water Systems in South Dakota (512)
Page 1 of 11, ordered by population served.
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Frequently Asked Questions
How many water systems are in South Dakota?
South Dakota has 512 community water systems tracked by the EPA, serving a combined population of 927,151 people.
How many water systems in South Dakota have health violations?
260 water systems in South Dakota have health-based violations, which include Maximum Contaminant Level (MCL) and Treatment Technique (TT) violations. These represent 51% of all systems in the state.
What is the total number of water violations in South Dakota?
South Dakota water systems have accumulated 1,192 total violations across all 512 community water systems.
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About This Data
Water system data is from the EPA Safe Drinking Water Information System (SDWIS). Health-based violations include Maximum Contaminant Level (MCL) and Treatment Technique (TT) violations that may pose a direct risk to public health. Only community water systems (CWS) are included.
Source: U.S. Environmental Protection Agency, SDWIS Federal Reporting Services U.S. Environmental Protection Agency, SDWIS Federal Reporting Services
Read our methodology - how this data is sourced, computed, and verified.