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WaterSafeCheck
Official EPA SDWIS Statewide AnalysisState Water Quality & Testing Directory

South Dakota Drinking Water Quality & Testing Directory

Comprehensive EPA compliance records, water testing guidelines, and city rankings covering all 392 ZIP codes across South Dakota

Quick Summary: Is Tap Water Safe in South Dakota?

Drinking water in South Dakota receives an average composite safety score of 59.8/100 based on EPA Safe Drinking Water Act records. Approximately 0% of monitored ZIP codes earn an "A" grade. Water sources are 51.5% surface water and 48.5% groundwater, resulting in Hard to Very Hard mineral hardness across the state.

Total ZIP Codes

392

Health Violations (5yr)

92

Statewide Avg Score

59.8/100

High Lead Risk Areas

77.3%

Overview: Drinking Water in South Dakota

Drinking water quality in South Dakota averages a composite safety score of 59.8/100 across its 392 monitored ZIP codes. Approximately 0% of ZIP codes in the state receive an "A" grade, while 0% receive an "F" grade. Environmental standards are enforced by South Dakota Department of Agriculture and Natural Resources.

Surface Water

51.5%

of ZIP codes

Total Violations

379

5-year record

Grade A ZIPs

1

0% of state

Grade F ZIPs

0

0% of state

Water Quality Grade Distribution in South Dakota

How do South Dakota's 392 ZIP codes stack up by water quality grade?

A
1 ZIP codes0%
B
81 ZIP codes21%
C
155 ZIP codes40%
D
155 ZIP codes40%
F
0 ZIP codes0%

Popular Cities in South Dakota

Click any city to view ZIP code-level water quality reports

Sioux Falls

20 ZIPs

C

Rapid City

4 ZIPs

B

Brandon

2 ZIPs

C

Brookings

2 ZIPs

D

Milbank

2 ZIPs

C

Chamberlain

2 ZIPs

C

Huron

2 ZIPs

C

Aberdeen

2 ZIPs

C

Spearfish

2 ZIPs

B

Alcester

1 ZIP

C

Aurora

1 ZIP

B

Baltic

1 ZIP

C

Beresford

1 ZIP

C

Burbank

1 ZIP

D

Canistota

1 ZIP

C

Canton

1 ZIP

C

Centerville

1 ZIP

C

Irene

1 ZIP

C

Jefferson

1 ZIP

C

Lennox

1 ZIP

B

Lesterville

1 ZIP

C

Lyons

1 ZIP

D

Madison

1 ZIP

C

Marion

1 ZIP

B

Menno

1 ZIP

C

Mission Hill

1 ZIP

C

Monroe

1 ZIP

D

Montrose

1 ZIP

C

North Sioux City

1 ZIP

C

Nunda

1 ZIP

D

Oldham

1 ZIP

D

Olivet

1 ZIP

D

Parker

1 ZIP

B

Ramona

1 ZIP

D

Renner

1 ZIP

D

Rutland

1 ZIP

D

Watertown

1 ZIP

C

Salem

1 ZIP

D

Scotland

1 ZIP

C

Sinai

1 ZIP

D

City A-Z Directory — South Dakota

Browse water quality reports for every town and city in South Dakota.

A
AberdeenAgarAkaskaAlcesterAlexandriaAllenAlpenaAmherstAndoverArlingtonArmourArtesianAshtonAstoriaAuroraAvon
B
BadgerBalticBarnardBateslandBathBelle FourcheBelvidereBeresfordBig Stone CityBisonBlack HawkBluntBonesteelBowdleBox ElderBradleyBrandonBrandtBrentfordBridgewaterBristolBrittonBrookingsBruceBryantBuffaloBuffalo GapBullheadBurbankBurke
C
Camp CrookCanistotaCanovaCantonCaputaCarpenterCarthageCastlewoodCavourCentervilleChamberlainChancellorCherry CreekChesterClaire CityClaremontClarkClear LakeColmanColomeColtonColumbiaCondeCoronaCorsicaCresbardCrooksCuster
D
DallasDanteDavisDe SmetDeadwoodDell RapidsDelmontDimockDolandDraperDupree
E
Eagle ButteEdenEdgemontEganElk PointElktonEllsworth AfbEmeryEnningErwinEstellineEthanEureka
F
FairburnFairfaxFairviewFaithFaulktonFedoraFerneyFlandreauFlorenceFort MeadeFort PierreFort ThompsonFrankfortFrederickFreemanFulton
G
Gann ValleyGarden CityGarretsonGaryGayvilleGeddesGettysburgGlencrossGlenhamGoodwinGregoryGrenvilleGroton
H
HamillHarrisburgHarrisonHarroldHartfordHayesHaytiHazelHeclaHenryHermosaHerreidHerrickHighmoreHill CityHitchcockHolabirdHosmerHot SpringsHoughtonHovenHowardHowesHudsonHumboldtHurleyHuron
I
IdealInteriorIpswichIreneIroquoisIsabel
J
JavaJefferson
K
KadokaKaylorKeldronKennebecKeystoneKimballKranzburgKyle
L
LaboltLake AndesLake CityLake NordenLake PrestonLaneLangfordLantryLeadLebanonLemmonLennoxLeolaLestervilleLetcherLittle EagleLodgepoleLong LakeLong ValleyLower BruleLudlowLyons
M
MadisonMandersonMansfieldMarionMartinMartyMarvinMc IntoshMc LaughlinMeadowMelletteMennoMidlandMilbankMilesvilleMillerMissionMission HillMitchellMobridgeMonroeMontroseMorristownMound CityMount VernonMud ButteMurdo
N
NemoNew EffingtonNew HollandNew UnderwoodNewellNislandNorrisNorth Sioux CityNorthvilleNunda
O
OacomaOelrichsOglalaOkatonOkreekOldhamOlivetOnakaOnidaOralOrientOrtleyOwanka
P
ParkerParkstonParmeleePeeverPhilipPickstownPiedmontPierpontPierrePine RidgePlankintonPlattePollockPorcupinePrairie CityPreshoPringlePukwana
Q
Quinn
R
RalphRamonaRapid CityRaymondRedfieldRedigRee HeightsRelianceRennerRevaRevilloRidgeviewRockhamRoscoeRosebudRosholtRoslynRutland
S
Saint CharlesSaint FrancisSaint LawrenceSaint OngeSalemScenicScotlandSelbySenecaSinaiSioux FallsSissetonSmithwickSouth ShoreSpearfishSpencerSpringfieldStephanStickneyStockholmStrandburgStratfordSturgisSummit
T
TaborTeaTimber LakeTolstoyTorontoTrail CityTrentTrippTulareTurtonTuthillTwin BrooksTyndall
U
Union CenterUtica
V
ValeValley SpringsVeblenVermillionViborgViennaVirgilVivianVolgaVolin
W
WagnerWakondaWakpalaWalkerWallWallaceWanbleeWarnerWastaWataugaWatertownWaubayWebsterWentworthWessingtonWessington SpringsWestportWhiteWhite LakeWhite OwlWhite RiverWhitehorseWhitewoodWillow LakeWilmotWinfredWinnerWittenWolseyWoodWoonsocketWorthingWounded Knee
Y
YaleYankton

🏆 Highest Rated ZIP Codes in South Dakota

57716Batesland
88/100
A
57317Bonesteel
83/100
B
57523Burke
83/100
B
57529Dallas
83/100
B
57533Gregory
83/100
B

⚠ Lowest Rated ZIP Codes in South Dakota

57027Fairview
40/100
D
57041Lyons
40/100
D
57047Monroe
40/100
D
57052Olivet
40/100
D
57054Ramona
40/100
D

Common Drinking Water Contaminants in South Dakota

The following are common regulated contaminants found in South Dakota drinking water based on EPA violation records. Click any contaminant to learn about EPA safety limits and health effects.

Chlorine residualContaminant 0700Consumer Confidence Report RuleFecal ColiformStage 2 DBP RuleGross AlphaGross Beta

Source: EPA Safe Drinking Water Act Maximum Contaminant Level regulations. For the complete list of regulated contaminants and MCLs, see the Water Quality Safety Guide.

Frequently Asked Questions — South Dakota Drinking Water

Is tap water generally safe to drink in South Dakota?+
Yes, for the majority of residents, tap water in South Dakota is treated and regulated. However, compliance varies by city. State-wide, 1 ZIP codes receive an "A" grade, while 0 receive an "F". Search your specific ZIP code to see your local utility's record.
How do I test water quality or well water in South Dakota?+
Residents in South Dakota can test their tap or well water by contacting laboratories certified by South Dakota Department of Agriculture and Natural Resources or ordering an EPA-standard laboratory water testing kit. Annual testing is recommended for private wells to test for bacteria, nitrates, and heavy metals.
What are the biggest water quality issues in South Dakota?+
The primary issues include managing 92 health-based violations state-wide and resolving infrastructure age. 77.3% of ZIP codes in the state have a high probability of lead exposure risk due to pre-1986 piping.
Who regulates and enforces drinking water standards in South Dakota?+
Drinking water in South Dakota is regulated by South Dakota Department of Agriculture and Natural Resources under a primacy agreement with the U.S. EPA.
Where does South Dakota get its drinking water?+
Approximately 51.5% of monitored areas in South Dakota rely on surface water sources (lakes/rivers), while the rest use groundwater aquifers.
How do I find the official water quality report for my home in South Dakota?+
Search your ZIP code on our site to view data compiled from EPA records, or contact your local utility for their annual Consumer Confidence Report (CCR).
View All 392 ZIP Codes in South Dakota

Browse EPA water quality data for every monitored ZIP code. For faster results, use the search bar above.

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All 392 ZIP codes in South Dakota are actively monitored under the EPA Safe Drinking Water Act.