Water Quality in South Dakota

512 water systems • 260 cities • EPA SDWIS Data

512
Water Systems
19,565
Total Violations
0
Health-Based Violations
927,151
Population Served

Overview

South Dakota ranks 25th among all U.S. states for total drinking water violations, out of 51 states tracked. The state has 19,565 EPA Safe Drinking Water Act violations on record across 512 water systems serving 260 cities. None of the recorded violations are classified as health-based, indicating no contaminant was measured above safe EPA thresholds. South Dakota's total violation count is 45% below the national average. Water systems in South Dakota serve approximately 927,151 people. The most frequently cited contaminants in South Dakota violations include Coliform (TCR), TTHM, Total Haloacetic Acids (HAA5), Arsenic, Nitrate.

Cities with Most Violations in South Dakota

# City Violations Health-Based Water Systems Population
1 BROOKINGS 724 0 6 23,603
2 RAPID CITY 602 0 88 91,187
3 TIMBER LAKE 426 0 1 499
4 EDGEMONT 398 0 4 750
5 PIEDMONT,RAPID CITY 342 0 13 1,422
6 ABERDEEN,CARPENTER 312 0 2 217
7 ROSHOLT 274 0 1 379
8 HAMILL,WINNER 270 0 1 4,860
9 ABERDEEN,DELMONT 268 0 2 205
10 BERESFORD,WORTHING 216 0 1 5,250

Largest Cities in South Dakota

# City Population Violations Water Systems
1 SIOUX FALLS 222,857 48 11
2 RAPID CITY 91,187 602 88
3 ABERDEEN 49,572 34 17
4 BROOKINGS 23,603 724 6
5 WATERTOWN 23,230 6 2
6 MITCHELL 19,136 0 7
7 DELL RAPIDS 17,068 26 3
8 YANKTON 15,686 142 8
9 PIERRE 14,806 4 10
10 HURON 14,263 0 3

All Cities in South Dakota

City Population Violations Health Violations Contaminants
SIOUX FALLS 222,857 48 0 Chlorine, Coliform (TCR)
RAPID CITY 91,187 602 0 1,1,1-Trichloroethane, 1,1,2-Trichloroethane, 1,1-Dichloroethylene +48 more
ABERDEEN 49,572 34 0 Chlorine, Coliform (TCR)
BROOKINGS 23,603 724 0 1,1,1-Trichloroethane, 1,1,2-Trichloroethane, 1,1-Dichloroethylene +50 more
WATERTOWN 23,230 6 0 TTHM
MITCHELL 19,136 0 0
DELL RAPIDS 17,068 26 0 Chlorine, Coliform (TCR)
YANKTON 15,686 142 0 Chlorine, Coliform (TCR), TTHM
PIERRE 14,806 4 0 TTHM, Total Haloacetic Acids (HAA5)
HURON 14,263 0 0
BOX ELDER 14,000 0 0
SPEARFISH 13,411 84 0 Chlorine, Coliform (TCR), Nitrate
AVON,TABOR 13,320 32 0 Chlorine, Coliform (TCR)
ARLINGTON 13,087 0 0
MILLER,PIERRE 11,833 0 0
VERMILLION 11,695 0 0
BRANDON 11,048 0 0
HARRISBURG 10,297 0 0
ELLSWORTH AFB 9,100 18 0 Coliform (TCR)
MILBANK 8,594 0 0
MURDO 7,700 12 0 Chlorine, Coliform (TCR)
STURGIS 7,470 0 0
TEA 7,381 0 0
LAKE ANDES 6,958 8 0 TTHM, Total Haloacetic Acids (HAA5)
BRITTON 6,888 2 0 Coliform (TCR)
WAKONDA 6,503 8 0 Chlorine, Coliform (TCR)
CLEAR LAKE,TORONTO 6,200 0 0
MADISON 6,191 72 0 TTHM
BELLE FOURCHE 6,075 0 0
EGAN 6,041 8 0 Chlorine
BLACK HAWK 5,352 24 0 Coliform (TCR)
BERESFORD,WORTHING 5,250 216 0 1,2-DIBROMO-3-CHLOROPROPANE, 2,4,5-TP, 2,4-D +24 more
HAMILL,WINNER 4,860 270 0 1,1,1-Trichloroethane, 1,1,2-Trichloroethane, 1,1-Dichloroethylene +19 more
HOT SPRINGS 4,554 6 0 Coliform (TCR)
PARKER,SIOUX FALLS 4,250 0 0
GOODWIN,WATERTOWN 4,012 0 0
EAGLE BUTTE 4,000 20 0 Chlorine, TTHM, Total Haloacetic Acids (HAA5)
DAKOTA DUNES 3,700 0 0
HARTFORD 3,396 0 0
KIMBALL 3,322 0 0
MOBRIDGE 3,261 0 0
LEAD 3,107 100 0 Asbestos, Chlorine, Coliform (TCR) +3 more
CANTON 3,066 0 0
NORTH SIOUX CITY 3,042 0 0
CLARK,FLORENCE 2,927 210 0 1,1,1-Trichloroethane, 1,1,2-Trichloroethane, 1,1-Dichloroethylene +18 more
WINNER 2,921 0 0
EMERY,FULTON 2,685 0 0
LENNOX 2,571 6 0 Coliform (TCR)
SISSETON 2,479 0 0
CHAMBERLAIN 2,473 38 0 Chlorite, TTHM, Total Haloacetic Acids (HAA5)
NEWELL 2,421 0 0
FLANDREAU 2,372 12 0 Chlorine, Coliform (TCR)
BERESFORD 2,359 0 0
VOLGA 2,340 8 0 TTHM, Total Haloacetic Acids (HAA5)
REDFIELD 2,214 0 0
EAGLE BUTTE,RIDGEVIEW 2,190 0 0
ELK POINT 2,124 120 0 1,2-DIBROMO-3-CHLOROPROPANE, 2,4,5-TP, 2,4-D +25 more
FORT PIERRE 2,115 6 0 Asbestos
SPRINGFIELD 2,108 58 0 Asbestos, Chlorine, Coliform (TCR) +1 more
CUSTER 1,919 0 0
PIEDMONT 1,755 38 0 Chlorine, Coliform (TCR)
WEBSTER 1,696 0 0
BLACK HAWK,PIEDMONT 1,672 9 0 Arsenic
PARKSTON 1,567 4 0 Chlorine
MARTIN 1,500 6 0 Arsenic
WAGNER 1,490 0 0
BLACK HAWK,RAPID CITY 1,480 16 0 Chlorine
PIEDMONT,RAPID CITY 1,422 342 0 1,2-DIBROMO-3-CHLOROPROPANE, 2,4,5-TP, 2,4-D +28 more
GROTON 1,380 0 0
CROOKS 1,362 0 0
MILLER 1,349 0 0
FREEMAN 1,329 0 0
SALEM 1,325 18 0 Coliform (TCR)
BALTIC 1,271 0 0
PLATTE 1,256 0 0
BATESLAND 1,250 0 0
GARRETSON 1,228 0 0
GREGORY 1,221 0 0
CLEAR LAKE 1,218 0 0
AURORA 1,200 0 0
MURDO,PHILIP 1,170 0 0
GETTYSBURG 1,162 12 0 TTHM, Total Haloacetic Acids (HAA5)
DEADWOOD 1,156 8 0 TTHM, Total Haloacetic Acids (HAA5)
LEMMON 1,156 0 0
CLARK 1,148 0 0
ORAL 1,057 210 0 1,1,1-Trichloroethane, 1,1,2-Trichloroethane, 1,1-Dichloroethylene +47 more
DE SMET 1,056 84 0 1,1,1-Trichloroethane, 1,1,2-Trichloroethane, 1,1-Dichloroethylene +18 more
WHITEWOOD 1,039 0 0
PARKER 1,025 108 0 1,2-DIBROMO-3-CHLOROPROPANE, 2,4,5-TP, 2,4-D +24 more
TYNDALL 1,012 0 0
WORTHING 939 4 0 Chlorine
IPSWICH 928 0 0
VALLEY SPRINGS 925 0 0
CENTERVILLE 918 18 0 Chlorine, Coliform (TCR), TTHM +1 more
WESSINGTON SPRINGS 895 0 0
MARION 894 0 0
ELKTON 874 22 0 Arsenic, Coliform (TCR)
HILL CITY 872 8 0 Arsenic
ABERDEEN,MINA 863 6 0 Coliform (TCR)
NEW UNDERWOOD 859 6 0 Toluene
HOWARD 848 0 0
FAULKTON 830 0 0
ALCESTER 820 0 0
VIBORG 814 6 0 Chlorine, Coliform (TCR)
EUREKA 813 0 0
GARDEN CITY,RAPID CITY,TUALATIN 808 30 0 Chlorine, Coliform (TCR)
FORT MEADE 800 2 0 Chlorine
SCOTLAND 785 0 0
PLANKINTON 782 12 0 TTHM, Total Haloacetic Acids (HAA5)
BISON 780 42 0 Chlorine, Coliform (TCR), TTHM +1 more
PHILIP 759 0 0
EDGEMONT 750 398 0 1,2-DIBROMO-3-CHLOROPROPANE, 2,4,5-TP, 2,4-D +38 more
ESTELLINE 749 16 0 Nitrate
COLTON 738 0 0
WALL 699 0 0
CASTLEWOOD 698 0 0
ARMOUR 698 0 0
HIGHMORE 682 0 0
ONIDA 658 0 0
ALEXANDRIA 649 0 0
SELBY 645 44 0 Chlorine, Coliform (TCR), TTHM +1 more
CANISTOTA 642 4 0 Chlorine
COLMAN 634 0 0
WOONSOCKET 618 104 0 1,1,1-Trichloroethane, 1,1,2-Trichloroethane, 1,1-Dichloroethylene +22 more
MENNO 614 0 0
AVON 590 0 0
LAKE PRESTON 589 8 0 Chlorine
HUMBOLDT 579 22 0 Chlorine, Coliform (TCR)
BURKE 575 0 0
TRIPP 575 0 0
MCLAUGHLIN 569 0 0
HERMOSA 568 6 0 Coliform (TCR)
CORSICA 561 24 0 Chlorine, Coliform (TCR), TTHM +1 more
LAKE NORDEN 554 0 0
KADOKA 543 0 0
WHITE RIVER 533 0 0
BRIDGEWATER 511 6 0 Chlorine
WHITE 499 0 0
TIMBER LAKE 499 426 0 1,1,1-Trichloroethane, 1,1,2-Trichloroethane, 1,1-Dichloroethylene +45 more
DUPREE 494 4 0 Chlorine
WARNER 485 0 0
EMERY 480 0 0
JEFFERSON 475 6 0 Coliform (TCR)
WAUBAY 473 162 0 1,2-DIBROMO-3-CHLOROPROPANE, 2,4,5-TP, 2,4-D +24 more
PRESHO 472 0 0
BRYANT 471 0 0
BOWDLE 470 0 0
MONTROSE 468 22 0 Chlorine, Coliform (TCR)
MOUNT VERNON 461 0 0
ABERDEEN,EXCELSIOR 460 0 0
WOLSEY 459 0 0
BLACK HAWK,LEAD 448 84 0 1,1,1-Trichloroethane, 1,1,2-Trichloroethane, 1,1-Dichloroethylene +18 more
LEOLA 434 4 0 Chlorine
WILMOT 432 0 0
TABOR 423 0 0
IRENE 422 16 0 TTHM, Total Haloacetic Acids (HAA5)
HERREID 416 4 0 Chlorine
BIG STONE CITY 412 6 0 Coliform (TCR)
HAYTI 393 0 0
GAYVILLE 392 2 0 Coliform (TCR)
OACOMA 386 62 0 TTHM, Total Haloacetic Acids (HAA5)
SUMMIT 382 178 0 1,1,1-Trichloroethane, 1,1,2-Trichloroethane, 1,1-Dichloroethylene +47 more
HURLEY 379 0 0
ROSHOLT 379 274 0 1,2-DIBROMO-3-CHLOROPROPANE, 2,4,5-TP, 2,4-D +26 more
FAITH 367 0 0
CHESTER,EGAN 363 0 0
WHITE LAKE 359 0 0
BLUNT,MILLER 350 0 0
KEYSTONE 349 22 0 Coliform (TCR)
BUFFALO 346 4 0 Chlorine
HOVEN 346 0 0
ABERDEEN,CANDO 340 12 0 Chlorine, Coliform (TCR)
BLACK HAWK,HOT SPRINGS 340 22 0 Chlorine, TTHM, Total Haloacetic Acids (HAA5)
FLORENCE 337 14 0 Chlorine, Coliform (TCR)
HUDSON 332 0 0
COLOME 323 94 0 1,1,1-Trichloroethane, 1,1,2-Trichloroethane, 1,1-Dichloroethylene +19 more
STICKNEY 321 0 0
ETHAN 320 0 0
STURGIS,WESTMINSTER 320 0 0
VEBLEN 317 58 0 Chlorine, Coliform (TCR), TTHM +1 more
IROQUOIS 292 0 0
BRISTOL 288 18 0 Chlorine, Coliform (TCR)
LANGFORD 283 0 0
ABERDEEN,FRANKFORT 283 176 0 1,1,1-Trichloroethane, 1,1,2-Trichloroethane, 1,1-Dichloroethylene +29 more
BLACK HAWK,SPEARFISH 280 6 0 Coliform (TCR)
BONESTEEL 275 8 0 Coliform (TCR), Nitrate
ROSCOE 269 0 0
CHAMBERLAIN,PUKWANA 267 38 0 Coliform (TCR)
CHANCELLOR 266 0 0
KENNEBEC 265 0 0
PIEDMONT,STURGIS 265 0 0
MERCER ISLAND,RAPID CITY 264 6 0 Coliform (TCR)
HENRY 256 0 0
SPEARFISH,ST ONGE 255 0 0
WILLOW LAKE 255 0 0
ABERDEEN,FAULKTON 253 6 0 Coliform (TCR)
NEW EFFINGTON 247 4 0 Chlorine
GARY 240 0 0
SIOUX FALLS,SPOKANE 230 6 0 Coliform (TCR)
PICKSTOWN 230 0 0
POLLOCK 229 0 0
BLACK HAWK,NEW UNDERWOOD 220 0 0
ABERDEEN,CARPENTER 217 312 0 1,1,1-Trichloroethane, 1,1,2-Trichloroethane, 1,1-Dichloroethylene +47 more
FREDERICK 215 0 0
ALPENA,MILLER 212 18 0 Chlorine, Coliform (TCR)
MILLER,TULARE 211 18 0 Coliform (TCR), TTHM, Total Haloacetic Acids (HAA5)
BLACK HAWK,LAS VEGAS 210 0 0
HECLA 208 26 0 Arsenic
NISLAND 206 32 0 Chlorine, Coliform (TCR)
TRENT 206 0 0
ABERDEEN,DELMONT 205 268 0 1,2-DIBROMO-3-CHLOROPROPANE, 2,4,5-TP, 2,4-D +36 more
BLACK HAWK,SUMMERSET,WELLESLEY 200 28 0 Chlorine, Coliform (TCR)
RAPID CITY,STURGIS 200 0 0
DOLAND 199 8 0 Chlorine
MELLETTE,REDFIELD 199 0 0
MILLER,SAINT LAWRENCE 198 0 0
ABERDEEN,ARTESIAN 198 6 0 Coliform (TCR)
SPEARFISH,WHITEWOOD 192 20 0 Coliform (TCR), Nitrate
HOSMER 190 0 0
MISSION HILL 190 10 0 Chlorine, Coliform (TCR)
SOUTH SHORE 189 18 0 Chlorine, Coliform (TCR), Nitrate
ABERDEEN,IROQUOIS 189 12 0 Coliform (TCR)
ABERDEEN,WESTPORT 188 6 0 Coliform (TCR)
ROSLYN 181 0 0
EGAN,WENTWORTH 181 0 0
FLOWER MOUND,HILL CITY 180 8 0 Coliform (TCR)
LEAD,SIOUX FALLS 178 0 0
ABERDEEN,HURON 175 144 0 1,2-DIBROMO-3-CHLOROPROPANE, 2,4,5-TP, 2,4-D +25 more
BLACK HAWK,CEDAREDGE,RAPID CITY 170 0 0
WESSINGTON 170 18 0 Chlorine, Coliform (TCR)
SPENCER 170 0 0
GLENCROSS,MOBRIDGE 166 210 0 1,1,1-Trichloroethane, 1,1,2-Trichloroethane, 1,1-Dichloroethylene +47 more
BRITTON,PEEVER 164 0 0
VOLIN 161 14 0 Chlorine, Coliform (TCR)
LETCHER 159 28 0 Chlorine, Coliform (TCR), TTHM +1 more
ARLINGTON,RAMONA 159 182 0 1,1,1-Trichloroethane, 1,1,2-Trichloroethane, 1,1-Dichloroethylene +24 more
DELMONT 153 12 0 Chlorine, Coliform (TCR)
ABERDEEN,SCOTLAND 150 186 0 1,1,1-Trichloroethane, 1,1,2-Trichloroethane, 1,1-Dichloroethylene +30 more
ABERDEEN,IPSWICH 150 0 0
BATESLAND,MARTIN 148 26 0 Chlorine, Coliform (TCR)
ISABEL 145 20 0 Chlorine, Coliform (TCR)
NORTHVILLE 143 0 0
BLACK HAWK,STURGIS 143 146 0 Arsenic, Coliform (TCR)
CONDE 142 0 0
ABERDEEN,BRITTON 140 118 0 Arsenic
PIERPONT 129 0 0
BUFFALO GAP 126 110 0 Chlorine, Coliform (TCR)
JAVA 121 0 0
MIDLAND 120 28 0 Coliform (TCR), Total Haloacetic Acids (HAA5)
VALE 120 16 0 Chlorine
ABERDEEN,LAKE ANDES 118 6 0 Chlorine, Coliform (TCR)
OELRICHS 117 86 0 Chlorine, Coliform (TCR)
LESTERVILLE 115 44 0 Chlorine, Coliform (TCR)
HITCHCOCK,MILLER 112 0 0
BLACK HAWK,SIOUX FALLS 112 0 0
MCINTOSH 111 56 0 Chlorine, Coliform (TCR), Nitrate +2 more
BRITTON,CLAREMONT 108 0 0
ABERDEEN,ROSHOLT 108 204 0 1,1,1-Trichloroethane, 1,1,2-Trichloroethane, 1,1-Dichloroethylene +46 more
ABERDEEN,FLANDREAU 107 106 0 1,1,1-Trichloroethane, 1,1,2-Trichloroethane, 1,1-Dichloroethylene +19 more
BADGER 105 0 0

Water Quality in Other States

Alabama 13,972 violations Alaska 73,527 violations Arizona 60,414 violations Arkansas 17,031 violations California 39,276 violations Colorado 42,596 violations Connecticut 28,800 violations Delaware 1,242 violations District of Columbia 115 violations Florida 36,335 violations Georgia 32,159 violations Hawaii 182 violations Idaho 26,078 violations Illinois 30,544 violations Indiana 18,261 violations Iowa 9,389 violations Kansas 19,480 violations Kentucky 9,427 violations Louisiana 32,039 violations Maine 6,830 violations Maryland 5,321 violations Massachusetts 10,561 violations Michigan 15,820 violations Minnesota 3,784 violations Mississippi 25,296 violations Missouri 25,377 violations Montana 20,202 violations Nebraska 5,134 violations Nevada 8,167 violations New Hampshire 6,968 violations New Jersey 19,332 violations New Mexico 37,115 violations New York 93,834 violations North Carolina 54,399 violations North Dakota 8,431 violations Ohio 61,604 violations Oklahoma 128,472 violations Oregon 0 violations Pennsylvania 199,265 violations Rhode Island 0 violations South Carolina 13,045 violations Tennessee 20,607 violations Texas 263,180 violations Utah 71,655 violations Vermont 12,362 violations Virginia 15,298 violations Washington 54,459 violations West Virginia 81,622 violations Wisconsin 18,533 violations Wyoming 13,783 violations

Data Sources

Drinking water data from the EPA Safe Drinking Water Information System (SDWIS). Only active community water systems (CWS) serving 100+ people are included.

Verify at epa.gov