South Carolina tap water quality

559 active community water systems.

Largest water systems

GradeSystemPeopleHealth violations (5y)
AGreenville Water426,0570
DCity of Columbia Water354,0681
DCharleston Water System278,7712
CGrand Strand W&sa/Bull Creek252,8400
ASpartanburg Water System166,3640
DBjw&sa164,8291
CBcwsa Sangaree W/D (0820002)95,3450
BMt Pleasant Waterworks91,5000
ACity of Rock Hill89,8500
ASjwd Middle Tyger WTP89,5310
CSummerville Cpw81,7500
BCity of Florence79,7450
ALancaster County W&sd79,1070
BJoint Muni WSC54,8680
AGreer Cpw54,0240
ACity of Sumter53,0700
ADarlington County W&sa52,2880
DGreenwood Cpw (2410001)52,0220
ACity of Aiken51,5330
ACity of Myrtle Beach49,3750
AOrangeburg Dpu47,4630
DLaurens County W&s Comm44,8660
CCity of N Myrtle Beach43,8830
CCity of Goose Creek43,7440
CGcwsd Waccamaw Neck41,3000
AInman Campobello W/D (4220002)41,0070
CDcwa Knightsville40,1410
ABlue Ridge Water Co Inc40,0060
ACity of Seneca39,7720
BElectric City Utilities38,2041
AEasley Combined Util36,0980
APowdersville Water District34,9600
CCity of West Columbia34,0280
AWoodruff Roebuck W/D32,0380
CFort Jackson31,0000
CYork County East WD30,2252
AEdgefield Co W&sa (1920001)29,2000
CCity of Conway27,0050
CDCWS Ashley Phosphate26,5360
ACity of North Augusta26,1250
CLugoff Elgin Water Auth25,7830
AChesterfield Co Rural Water25,6910
AHilton Head PSD 1 (0720006)25,5580
ACassatt WTR - Kershaw/Lee Co RWA25,4850
ATown of Fort Mill25,0000
CGaffney Bpw24,2900
BLexington Town of (3210001)24,2840
CSt John's Water22,5920
ABreezy Hill W/D21,1970
AHammond W/D21,1930

Most issues (systems serving 10,000+)

D

Charleston Water System

Serves 278,771 people · Surface water · Full report →
2 health-based violations in the last 5 years; PFOA/PFOS average above the 4 ppt federal limit: PFOA, PFOS; Lead 90th percentile below the action level (2024).
D

City of Columbia Water

Serves 354,068 people · Surface water · Full report →
1 health-based violation in the last 5 years; PFOA/PFOS average above the 4 ppt federal limit: PFOS, PFOA; Lead 90th percentile below the action level (2023).
D

Bjw&sa

Serves 164,829 people · Surface water · Full report →
1 health-based violation in the last 5 years; PFOA/PFOS average above the 4 ppt federal limit: PFOA, PFOS; Lead 90th percentile below the action level (2024).
D

Greenwood Cpw (2410001)

Serves 52,022 people · Surface water · Full report →
No health-based violations in the last 5 years; PFOA/PFOS average above the 4 ppt federal limit: PFOS, PFOA; Other PFAS above 2024 limits (rule proposed for repeal): HFPO-DA, Hazard Index; Lead 90th percentile below the action level (2023).
D

Laurens County W&s Comm

Serves 44,866 people · Surface water · Full report →
No health-based violations in the last 5 years; PFOA/PFOS average above the 4 ppt federal limit: PFOA, PFOS; Other PFAS above 2024 limits (rule proposed for repeal): HFPO-DA, Hazard Index; Lead 90th percentile below the action level (2024).
C

City of N Myrtle Beach

Serves 43,883 people · Surface water · Full report →
No health-based violations in the last 5 years; 3 monitoring/reporting violations; PFOA/PFOS average above the 4 ppt federal limit: PFOA, PFOS; Lead 90th percentile below the action level (2025).
C

Fort Jackson

Serves 31,000 people · Surface water · Full report →
No health-based violations in the last 5 years; 3 monitoring/reporting violations; PFOA/PFOS average above the 4 ppt federal limit: PFOS, PFOA; Lead 90th percentile below the action level (2025).
C

City of Conway

Serves 27,005 people · Surface water · Full report →
No health-based violations in the last 5 years; 2 monitoring/reporting violations; PFOA/PFOS average above the 4 ppt federal limit: PFOS, PFOA; Lead 90th percentile below the action level (2023).
C

DCWS Ashley Phosphate

Serves 26,536 people · Surface water · Full report →
No health-based violations in the last 5 years; 2 monitoring/reporting violations; PFOA/PFOS average above the 4 ppt federal limit: PFOA, PFOS; Lead 90th percentile below the action level (2024).
C

Conway Rural

Serves 12,740 people · Surface water · Full report →
No health-based violations in the last 5 years; 2 monitoring/reporting violations; PFOA/PFOS average above the 4 ppt federal limit: PFOA, PFOS; Lead 90th percentile below the action level (2023).
C

Gcwsd Waccamaw Neck

Serves 41,300 people · Surface water · Full report →
No health-based violations in the last 5 years; 1 monitoring/reporting violation; PFOA/PFOS average above the 4 ppt federal limit: PFOA, PFOS; Lead 90th percentile below the action level (2024).
C

York County East WD

Serves 30,225 people · Surface water · Full report →
2 health-based violations in the last 5 years; 6 monitoring/reporting violations; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2024).
C

Grand Strand W&sa/Bull Creek

Serves 252,840 people · Surface water · Full report →
No health-based violations in the last 5 years; PFOA/PFOS average above the 4 ppt federal limit: PFOA, PFOS; Lead 90th percentile below the action level (2023).
C

Bcwsa Sangaree W/D (0820002)

Serves 95,345 people · Surface water · Full report →
No health-based violations in the last 5 years; PFOA/PFOS average above the 4 ppt federal limit: PFOA, PFOS; Lead 90th percentile below the action level (2023).
C

Summerville Cpw

Serves 81,750 people · Surface water · Full report →
No health-based violations in the last 5 years; PFOA/PFOS average above the 4 ppt federal limit: PFOS, PFOA; Lead 90th percentile below the action level (2023).
C

City of Goose Creek

Serves 43,744 people · Surface water · Full report →
No health-based violations in the last 5 years; PFOA/PFOS average above the 4 ppt federal limit: PFOS, PFOA; Lead 90th percentile below the action level (2023).
C

Dcwa Knightsville

Serves 40,141 people · Surface water · Full report →
No health-based violations in the last 5 years; PFOA/PFOS average above the 4 ppt federal limit: PFOA, PFOS; Lead 90th percentile below the action level (2023).
C

City of West Columbia

Serves 34,028 people · Surface water · Full report →
No health-based violations in the last 5 years; PFOA/PFOS average above the 4 ppt federal limit: PFOS, PFOA; Lead 90th percentile below the action level (2025).
C

Lugoff Elgin Water Auth

Serves 25,783 people · Surface water · Full report →
No health-based violations in the last 5 years; PFOA/PFOS average above the 4 ppt federal limit: PFOS, PFOA; Lead 90th percentile below the action level (2026).
C

Gaffney Bpw

Serves 24,290 people · Surface water · Full report →
No health-based violations in the last 5 years; PFOA/PFOS average above the 4 ppt federal limit: PFOS, PFOA; Lead 90th percentile below the action level (2024).

Cities

AbbevilleAdams RunAikenAlcoluAllendaleAndersonAndrewsAntrevilleArcadiaAwendawAynorBallentineBambergBarnwellBarrineau CrossroadsBatesburgBathBeaufortBeech IslandBeltonBennettsvilleBethuneBishopvilleBlacksburgBlackstockBlackvilleBlufftonBlythewoodBoiling SpringsBonneauBowmanBranchvilleBrunsonBurtonCadesCalhoun FallsCamdenCameronCampobelloCarlisleCassattCatawbaCayceCentenaryCentralChapinCharlestonCharleston AfbCherawChesneeChesterChesterfieldClarks HillClearwaterClemsonClevelandCliftonClintonClioCloverColumbiaConesteeConverseConwayCopeCordesvilleCordovaCottagevilleCowardCowpensCrossCross AnchorCross HillDalzellDarlingtonDaufuskie IslandDenmarkDillonDonaldsDraytonDue WestDuncanEasleyEastoverEdgefieldEdisto BeachEdisto IslandEffinghamEhrhardtElginElkoElliottElloreeEnoreeEstillEutawvilleFair PlayFairfaxFingervilleFlorenceFolly BeachForkFort JacksonFort LawnFort MillFountain InnFurmanGaffneyGalivants FerryGastonGeorgetownGiffordGilbertGlendaleGlovervilleGoose CreekGramlingGranitevilleGray CourtGreat FallsGreeleyvilleGreen SeaGreenvilleGreenwoodGreerGreshamHamerHamptonHanahanHardeevilleHarleyvilleHartsvilleHeath SpringsHelenaHemingwayHickory GroveHildaHiltonHilton Head IslandHodgesHolly HillHollywoodHonea PathHopkinsHugerInmanIrmoIsle of PalmsIvaJacksonJamestownJeffersonJenkinsvilleJoannaJohns IslandJohns Island (Sta.)JohnsonvilleJohnstonJonesvilleKershawKinardsKingstreeLA FranceLadsonLake CityLake ViewLake View (Corporate Name forLamarLancasterLandoLandrumLaneLangleyLattaLaurensLeesvilleLeslie (Lesslie)LexingtonLibertyLiberty HillLincolnvilleLittle MountainLittle RiverLittle RockLockhartLodgeLongsLorisLowndesvilleLugoffLydiaLymanLynchburgManningMariettaMarionMauldinMayesvilleMayoMaysvilleMc BeeMc CollMc ConnellsMc CormickMcBeeMcCollMcConnellsMcCormickMitfordModocMoncks CornerMonettaMontmorenciMooreMount CarmelMount CroghanMount PleasantMountain RestMountvilleMullinsMurrells InletMyrtle BeachNeesesNeeses (Corporate Name for NeeNesmithNew EllentonNewberryNewryNicholsNinety SixNinety Six (Corporate Name forNorrisNorthNorth AugustaNorth CharlestonNorth Myrtle BeachNorwayOkatieOlantaOlarOrangeburgPacoletPacolet MillsPagelandPamplicoParksvilleParris IslandPatrickPaulinePawleys IslandPelionPelzerPendletonPickensPiedmontPineridgePinevillePinewoodPinopolisPlum BranchPomariaPort RoyalProsperityRainsRavenelRed BankReevesvilleReidvilleRembertRichburgRichlandRidge SpringRidgelandRidgevilleRidgewayRock HillRoebuckRowesvilleRubyRuffinSaint GeorgeSaint Helena IslandSaint MatthewsSaint StephenSalemSalleySaltersSaludaSanteeScotiaScrantonSeabrookSellersSenecaSharonShaw AfbSheldonSilverstreetSimpsonvilleSix MileSlaterSmoaksSmyrnaSociety HillSouth CongareeSpartanburgSpringfieldSt. GeorgeSt. MatthewsStarrStartexState ParkStuckeySullivans IslandSummertonSummervilleSumterSunsetSwanseaTaylorsTega CayTigervilleTimmonsvilleTownvilleTravelers RestTrentonTroyTurbevilleUlmerUlmer (Corporate Name for UlmeUnaUnionVan WyckVanceVarnvilleVaucluseWadmalaw IslandWagenerWalhallaWallaceWalterboroWardWare ShoalsWarrenvilleWaterlooWedgefieldWellfordWest AndersonWest ColumbiaWest UnionWestminsterWestvilleWhitmireWilliamsWilliamstonWillistonWinnsboroWoodruffYemasseeYork