Know Your Environment. Protect Your Health.

STATE

South Dakota

CONTAMINANTS

44

serves

990,000

data

2013-2024

UTILITIES

462

Overview

EWG's drinking water quality report for South Dakota shows results of tests conducted by the water utilities in South Dakota and provided to EWG by the South Dakota Department of Environment & Natural Resources.

LARGE UTILITIES
ALL UTILITIES WITH VIOLATIONS
LARGE UTILITIES WITH VIOLATIONS

Large utilities in South Dakota

Below are utilities in South Dakota serving over 10,000 people, listed alphabetically.

UtilityLocationPeople Served
AberdeenAberdeen, SD28,495
Bon Homme-Yankton RWSTabor, SD47,898
Box ElderBox Elder, SD10,551
BrandonBrandon, SD10,226
Brookings Municipal UtilitiesBrookings, SD22,980
HuronHuron, SD14,263
Mid-Dakota Rural WaterMiller, SD33,063
Minnehaha Community Water CorporationDell Rapids, SD28,893
MitchellMitchell, SD15,651
PierrePierre, SD14,091
Randall Community Water DistrictLake Andes, SD20,340
Rapid CityRapid City, SD78,836
Rapid Valley Sanitary DistrictRapid City, SD10,000
Sioux FallsSioux Falls, SD201,650
SpearfishSpearfish, SD12,193
VermillionVermillion, SD11,254
Watertown Municipal UtilitiesWatertown, SD22,162
Web Water Development AssociationAberdeen, SD31,822
YanktonYankton, SD15,411

Utilities that accumulated/accrued the most violation points as of July 2021 to June 2024 in South Dakota

The Environmental Protection Agency's Enforcement and Compliance History Online (ECHO) database collects compliance and enforcement-related information for drinking water utilities nationwide. ECHO water quality violation scores take into account federal health-based water quality standards, as well as monitoring, reporting and other drinking water quality requirements. Points are accrued based on specific problems at the utility - violations of health-based drinking water standards receive more points than monitoring and reporting violations - and the length of time until the violations were corrected.

UtilityLocationPeople ServedViolation Points
Pelican PlazaWatertown, SD12050
Provo Area Water SystemEdgemont, SD428
HenryHenry, SD2866
HerreidHerreid, SD4246
Fairburn Water AssociationFairburn, SD656
LeolaLeola, SD4346
Valley View Water CompanyRapid City, SD2485
HosmerHosmer, SD1645
Buffalo GapBuffalo Gap, SD1505
Sunnyside Mobile Home Park IIRapid City, SD2505
Northdale Sanitary DistrictBlack Hawk, SD1,0755
SummitSummit, SD2835
Valley View EstatesSioux Falls, SD2305
NislandNisland, SD2064
LestervilleLesterville, SD1152
Shamrock ColonyCarpenter, SD752
WallaceWallace, SD892
Westport Sanitary DistrictAberdeen, SD882
Rock Ridge CourtBlack Hawk, SD742
SelbySelby, SD6112
University EstatesBrookings, SD1502
CoronaCorona, SD822
Riverside Mobile Home CourtSpearfish, SD752
MidlandMidland, SD1202
Lakeside EstatesAberdeen, SD4602
AvonAvon, SD5902
Copper Oaks IRapid City, SD642
AlcesterAlcester, SD8202
Sunshine Bible AcademyMiller, SD1002
CorsicaCorsica, SD5612

Large utilities that accumulated/accrued the most violation points as of July 2021 to June 2024 in South Dakota

The Environmental Protection Agency's Enforcement and Compliance History Online (ECHO) database collects compliance and enforcement-related information for drinking water utilities nationwide. ECHO water quality violation scores take into account federal health-based water quality standards, as well as monitoring, reporting and other drinking water quality requirements. Points are accrued based on specific problems at the utility - violations of health-based drinking water standards receive more points than monitoring and reporting violations - and the length of time until the violations were corrected.

UtilityLocationPeople ServedViolation Points
MitchellMitchell, SD15,6511

Contaminants found in South Dakota above health guidelines

Found above health guidelines Found
Contaminant # of Utilities People Served # of Utilities People Served
Total trihalomethanes (TTHMs)302915,809303916,427
Haloacetic acids (HAA5)241876,693241876,693
Haloacetic acids (HAA9)113637,547113637,547
Chromium (hexavalent)83532,32984546,420
Arsenic123531,892123531,892
Nitrate21321,85964369,114
Radium, combined (-226 & -228)136168,113136168,113
Manganese114,091110640,006
Uranium, combined (pCi/L)1313,1941613,791
Perfluorohexane sulfonate (PFHXS)210,030210,030
Atrazine12,473345,059
Tetrachloroethylene (perchloroethylene)31,46031,460
Carbon tetrachloride21,10031,205
Bromochloromethane15331533
Vinyl chloride12551255
Thallium21354371

Contaminants found in South Dakota above legal limits

Contaminant # of Utilities People Served

What filter type is right for you?

Water
Contaminants

view utility

Carbon Filters

Can reduce the levels of many common contaminants.

pros

  • Lower upfront cost
  • Reduced maintenance

cons

  • Does not remove all contaminants

Reverse Osmosis

Most effective at reducing contaminants.

pros

  • Most effective

cons

  • Higher upfront cost
  • Requires more maintenance
  • Wastes water

Other Considerations

Ion Exchange

Pros: Softens hard water, Reduces some contaminants

Cons: Doesn't remove all contaminants

Whole-House Filters

Pros: Useful for reducing radiologicals and TCE

Cons: Expensive to install and maintain, Risk of bacterial contamination

Distillation

Pros: Removes heavy metals and harmful microbes

Cons: Does not reduce most contaminants

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