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South Dakota Tap Water Quality

EPA water quality data for 150 community water systems serving 496,949+ people in South Dakota. Click any system to see violations, lead testing results, and a safety grade.

SIOUX FALLS SIOUX FALLS, SD · 216,462 people · Surface Water ABERDEEN ABERDEEN, SD · 27,989 people · Surface Water BROOKINGS MUNICIPAL UTILITIES BROOKINGS, SD · 23,377 people · Groundwater MITCHELL MITCHELL, SD · 15,651 people · Surface Water Purchased HURON HURON, SD · 14,263 people · Surface Water Purchased PIERRE PIERRE, SD · 14,091 people · Surface Water BOX ELDER BOX ELDER, SD · 14,000 people · Groundwater RAPID VALLEY SANITARY DISTRICT RAPID CITY, SD · 11,408 people · Surface Water BRANDON BRANDON, SD · 11,048 people · Groundwater HARRISBURG HARRISBURG, SD · 10,297 people · Groundwater Purchased MADISON MADISON, SD · 6,191 people · Groundwater LINCOLN COUNTY RURAL WATER SYSTEM SIOUX FALLS, SD · 5,965 people · Groundwater Purchased BELLE FOURCHE BELLE FOURCHE, SD · 5,617 people · Groundwater BLACK HAWK WATER USER DISTRICT BLACK HAWK, SD · 4,500 people · Groundwater EAGLE BUTTE EAGLE BUTTE, SD · 4,000 people · Surface Water Purchased DELL RAPIDS DELL RAPIDS, SD · 3,633 people · Groundwater Purchased MILBANK MILBANK, SD · 3,544 people · Groundwater HARTFORD HARTFORD, SD · 3,396 people · Groundwater Purchased HOT SPRINGS HOT SPRINGS, SD · 3,395 people · Groundwater MOBRIDGE MOBRIDGE, SD · 3,261 people · Surface Water CANTON CANTON, SD · 3,066 people · Groundwater NORTH SIOUX CITY NORTH SIOUX CITY, SD · 3,042 people · Groundwater LENNOX LENNOX, SD · 2,571 people · Groundwater Purchased CHAMBERLAIN CHAMBERLAIN, SD · 2,473 people · Surface Water FLANDREAU FLANDREAU, SD · 2,372 people · Groundwater Purchased REDFIELD REDFIELD, SD · 2,214 people · Surface Water Purchased TRI-COUNTY RURAL WATER SYSTEM EAGLE BUTTE, SD · 2,190 people · Surface Water ELK POINT ELK POINT, SD · 2,124 people · Groundwater FORT PIERRE FORT PIERRE, SD · 2,115 people · Surface Water Purchased CUSTER CUSTER, SD · 1,919 people · Groundwater PARKSTON PARKSTON, SD · 1,567 people · Surface Water Purchased MARTIN MARTIN, SD · 1,500 people · Groundwater BUTTE-MEADE SWD-BEAN WELL NEWELL, SD · 1,481 people · Groundwater GROTON GROTON, SD · 1,380 people · Surface Water Purchased MILLER MILLER, SD · 1,349 people · Surface Water Purchased FREEMAN FREEMAN, SD · 1,329 people · Surface Water Purchased SALEM SALEM, SD · 1,325 people · Groundwater BALTIC BALTIC, SD · 1,271 people · Groundwater Purchased PLATTE PLATTE, SD · 1,256 people · Surface Water Purchased GARRETSON GARRETSON, SD · 1,228 people · Groundwater Purchased GREGORY GREGORY, SD · 1,221 people · Groundwater CLEAR LAKE CLEAR LAKE, SD · 1,218 people · Groundwater Purchased AURORA AURORA, SD · 1,200 people · Groundwater Purchased COLONIAL PINE HILLS SANITARY DISTRIC RAPID CITY, SD · 1,200 people · Groundwater CHAPEL LANE WATER COMPANY RAPID CITY, SD · 1,200 people · Groundwater GETTYSBURG GETTYSBURG, SD · 1,162 people · Surface Water Purchased DEADWOOD DEADWOOD, SD · 1,156 people · Surface Water Purchased LEMMON LEMMON, SD · 1,156 people · Surface Water Purchased CLARK CLARK, SD · 1,148 people · Groundwater Purchased DE SMET DE SMET, SD · 1,056 people · Groundwater PARKER PARKER, SD · 1,025 people · Groundwater Purchased CENTERVILLE CENTERVILLE, SD · 918 people · Groundwater Purchased MARION MARION, SD · 894 people · Groundwater Purchased HILL CITY HILL CITY, SD · 872 people · Groundwater HOWARD HOWARD, SD · 848 people · Groundwater Purchased ALCESTER ALCESTER, SD · 820 people · Groundwater Purchased EUREKA EUREKA, SD · 813 people · Surface Water Purchased SCOTLAND SCOTLAND, SD · 785 people · Surface Water Purchased PLANKINTON PLANKINTON, SD · 782 people · Surface Water Purchased PHILIP PHILIP, SD · 759 people · Surface Water Purchased ELKTON ELKTON, SD · 755 people · Groundwater Purchased ESTELLINE ESTELLINE, SD · 749 people · Groundwater Purchased EDGEMONT EDGEMONT, SD · 725 people · Groundwater LAKE ANDES LAKE ANDES, SD · 710 people · Surface Water Purchased CASTLEWOOD CASTLEWOOD, SD · 698 people · Groundwater Purchased ARMOUR ARMOUR, SD · 698 people · Surface Water Purchased FAULKTON FAULKTON, SD · 693 people · Surface Water Purchased HIGHMORE HIGHMORE, SD · 682 people · Surface Water Purchased NEW UNDERWOOD NEW UNDERWOOD, SD · 679 people · Groundwater ONIDA ONIDA, SD · 658 people · Surface Water Purchased ALEXANDRIA ALEXANDRIA, SD · 649 people · Surface Water Purchased SELBY SELBY, SD · 645 people · Surface Water Purchased CANISTOTA CANISTOTA, SD · 642 people · Groundwater Purchased COLMAN COLMAN, SD · 634 people · Groundwater Purchased MENNO MENNO, SD · 614 people · Surface Water Purchased AVON AVON, SD · 590 people · Surface Water Purchased NEWELL NEWELL, SD · 583 people · Groundwater HUMBOLDT HUMBOLDT, SD · 579 people · Groundwater Purchased BURKE BURKE, SD · 575 people · Groundwater Purchased KIMBALL KIMBALL, SD · 572 people · Surface Water Purchased MCLAUGHLIN MCLAUGHLIN, SD · 569 people · Surface Water Purchased CORSICA CORSICA, SD · 561 people · Surface Water Purchased LAKE NORDEN LAKE NORDEN, SD · 554 people · Groundwater KADOKA KADOKA, SD · 543 people · Surface Water Purchased BRIDGEWATER BRIDGEWATER, SD · 511 people · Surface Water Purchased DUPREE DUPREE, SD · 494 people · Surface Water Purchased HISEGA MEADOWS WATER INC RAPID CITY, SD · 491 people · GWUDI MURDO MURDO, SD · 488 people · Surface Water Purchased EMERY EMERY, SD · 480 people · Surface Water Purchased JEFFERSON JEFFERSON, SD · 475 people · Groundwater PRESHO PRESHO, SD · 472 people · Surface Water Purchased BRYANT BRYANT, SD · 471 people · Groundwater Purchased BOWDLE BOWDLE, SD · 470 people · Surface Water Purchased MONTROSE MONTROSE, SD · 468 people · Groundwater Purchased MOUNT VERNON MOUNT VERNON, SD · 461 people · Surface Water Purchased LAKESIDE ESTATES ABERDEEN, SD · 460 people · Surface Water Purchased LEOLA LEOLA, SD · 434 people · Surface Water Purchased IRENE IRENE, SD · 422 people · Surface Water Purchased HERMOSA-OLD SYSTEM HERMOSA, SD · 420 people · Groundwater HERREID HERREID, SD · 416 people · Surface Water Purchased BIG STONE CITY BIG STONE CITY, SD · 412 people · Groundwater Purchased TERRY TROJAN WATER DISTRICT BLACK HAWK, SD · 400 people · Groundwater HAYTI HAYTI, SD · 393 people · Groundwater Purchased GAYVILLE GAYVILLE, SD · 392 people · Groundwater Purchased OACOMA OACOMA, SD · 386 people · Surface Water HURLEY HURLEY, SD · 379 people · Groundwater Purchased ROSHOLT ROSHOLT, SD · 379 people · Groundwater FAITH FAITH, SD · 367 people · Surface Water Purchased CHESTER SANITARY DISTRICT EGAN, SD · 363 people · Groundwater Purchased PRAIRIE ACRES LLC RAPID CITY, SD · 350 people · Groundwater BLUNT MILLER, SD · 350 people · Surface Water Purchased BUFFALO BUFFALO, SD · 346 people · Groundwater HOVEN HOVEN, SD · 346 people · Surface Water Purchased COUNTRY VILLAGE PARK ABERDEEN, SD · 340 people · Surface Water Purchased FLORENCE FLORENCE, SD · 337 people · Groundwater Purchased HUDSON HUDSON, SD · 332 people · Groundwater Purchased COLOME COLOME, SD · 323 people · Groundwater ETHAN ETHAN, SD · 320 people · Surface Water Purchased BISON BISON, SD · 310 people · Surface Water Purchased IROQUOIS IROQUOIS, SD · 292 people · Groundwater Purchased BRISTOL BRISTOL, SD · 288 people · Surface Water Purchased LANGFORD LANGFORD, SD · 283 people · Groundwater Purchased BONESTEEL BONESTEEL, SD · 275 people · Groundwater Purchased ROSCOE ROSCOE, SD · 269 people · Surface Water Purchased PUKWANA CHAMBERLAIN, SD · 267 people · Surface Water Purchased CARRIAGE HILLS RAPID CITY, SD · 267 people · Groundwater CHANCELLOR CHANCELLOR, SD · 266 people · Groundwater Purchased KENNEBEC KENNEBEC, SD · 265 people · Surface Water Purchased HENRY HENRY, SD · 256 people · Groundwater Purchased WOODLAND HILLS SANITARY DISTRICT BLACK HAWK, SD · 255 people · Groundwater SAINT ONGE SEWER & WATER CO SPEARFISH, SD · 255 people · Groundwater VALLEY VIEW WATER COMPANY PIEDMONT, SD · 248 people · Groundwater NEW EFFINGTON NEW EFFINGTON, SD · 247 people · Groundwater Purchased EGAN EGAN, SD · 241 people · Groundwater Purchased GARY GARY, SD · 240 people · Groundwater Purchased VALLEY VIEW ESTATES SIOUX FALLS, SD · 230 people · Groundwater POLLOCK POLLOCK, SD · 229 people · Surface Water Purchased FREDERICK FREDERICK, SD · 215 people · Surface Water Purchased ALPENA MILLER, SD · 212 people · Surface Water Purchased PLAINSVIEW MOBILE MANOR BLACK HAWK, SD · 210 people · Groundwater HECLA HECLA, SD · 208 people · Groundwater Purchased NISLAND NISLAND, SD · 206 people · Groundwater PINE HILLS PARK SUMMERSET, SD · 200 people · Groundwater Purchased DOLAND DOLAND, SD · 199 people · Surface Water Purchased MELLETTE REDFIELD, SD · 199 people · Surface Water Purchased SAINT LAWRENCE MILLER, SD · 198 people · Surface Water Purchased MISSION HILL MISSION HILL, SD · 190 people · Surface Water Purchased ROSLYN ROSLYN, SD · 181 people · Surface Water Purchased PINE CLIFF ESTATES BLACK HAWK, SD · 180 people · Groundwater RAPID CITY MOBILE HOME PARK BLACK HAWK, SD · 170 people · Groundwater