Rhode Island tap water quality

88 active community water systems.

Largest water systems

GradeSystemPeopleHealth violations (5y)
AProvidence Water333,1420
APawtucket Water Supply Board Veolia-Na98,1300
BKent County Water Authority94,1070
AWarwick-City of73,2890
ABristol County Water Authority49,0000
AEast Providence-City of47,9610
BWoonsocket Water Division45,8280
CNewport-City of42,1550
DWesterly Water Department35,2980
CTown of North Kingstown27,7320
ALincoln Water Commission21,6640
CTown of Cumberland21,2350
CVeolia Water Wakefield Rhode Island Inc21,2252
CUniversity of Rhode Island19,3540
CPortsmouth Water & Fire District17,0903
BCne - New London Turnpike Entry Point9,9990
BBlock Island Water Company9,9990
AGreenville Water District9,5000
ASmithfield Water Supply Board9,4600
ANorth Tiverton Fire District8,9690
DNarragansett Water System-Point Judith8,2105
ANaval Station, Newport7,8700
BSouth Kingstown-South Shore6,1700
AClear River Electric and Water District6,0000
DNarragansett Water Dept-North End4,4324
CKingston Water District3,9680
DSlatersville Public Supply3,4034
BJamestown Water Department3,3480
ATiverton Water Authority, Town Hall3,2130
CStone Bridge Fire District2,7931
BDowling Village2,7200
CTown of Richmond2,6712
AWarwick-Potowomut2,1630
BPrudence Island Water District1,5000
BScituate High School & Middle School1,4260
AMaplehill Mobile Home Park7500
ASouth Kingstown-Middlebridge6940
CProvidence-City of - Whipple4712
CCentral Beach Fire District4702
AUnited States Navy -Fort Adams3200
ACne - Hopkins Hill Road Entry Point3170
BQuonochontaug East Beach Water Associati3000
AShady Harbor Fire District3000
BShadow Woods at Deer Brook3000
DExeter Job Corps Center3002
ACastle Rock Condominiums2920
CEleanor Slater Hospital Zambarano Unit2700
AShannock Water District2690
DLake Forest Health and Rehabilitation2681
BVillage on Chopmist Hill, the2500

Most issues (systems serving 10,000+)

D

Westerly Water Department

Serves 35,298 people · Groundwater · Full report →
No health-based violations in the last 5 years; 24 monitoring/reporting violations; PFOA/PFOS average above the 4 ppt federal limit: PFOS, PFOA; Lead 90th percentile below the action level (2025).
C

Portsmouth Water & Fire District

Serves 17,090 people · Surface water · Full report →
3 health-based violations in the last 5 years; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2024).
C

Town of Cumberland

Serves 21,235 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 (2025).
C

Town of North Kingstown

Serves 27,732 people · Groundwater · 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 (2025).
C

University of Rhode Island

Serves 19,354 people · Groundwater · 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 (2025).
C

Newport-City of

Serves 42,155 people · Surface water · Full report →
No health-based violations in the last 5 years; 4 monitoring/reporting violations; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile ABOVE the action level (2025).
C

Veolia Water Wakefield Rhode Island Inc

Serves 21,225 people · Groundwater · Full report →
2 health-based violations in the last 5 years; 3 monitoring/reporting violations; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2024).
B

Kent County Water Authority

Serves 94,107 people · Surface water · Full report →
No health-based violations in the last 5 years; PFOA/PFOS average above the 4 ppt federal limit: PFOA; Lead 90th percentile below the action level (2025).
B

Woonsocket Water Division

Serves 45,828 people · Surface water · Full report →
No 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 (2025).
A

Providence Water

Serves 333,142 people · Surface water · Full report →
No health-based violations in the last 5 years; 2 monitoring/reporting violations; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2026).
A

Pawtucket Water Supply Board Veolia-Na

Serves 98,130 people · Surface water · Full report →
No health-based violations in the last 5 years; 2 monitoring/reporting violations; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2025).
A

Warwick-City of

Serves 73,289 people · Surface water · Full report →
No health-based violations in the last 5 years; 2 monitoring/reporting violations; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2025).
A

Bristol County Water Authority

Serves 49,000 people · Surface water · Full report →
No health-based violations in the last 5 years; 2 monitoring/reporting violations; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2025).
A

Lincoln Water Commission

Serves 21,664 people · Surface water · Full report →
No health-based violations in the last 5 years; 1 monitoring/reporting violation; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2025).
A

East Providence-City of

Serves 47,961 people · Surface water · Full report →
No health-based violations in the last 5 years; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2025).

Cities

AlbionAshawayBarringtonBlock IslandBradfordBristolBurrillvilleCentral FallsCharlestownChepachetCoventryCranstonCumberlandEast GreenwichEast ProvidenceExeterFosterGlocesterGreeneGreenvilleHopeHope ValleyHopkintonJamestownJohnstonKingstonLincolnManvilleMaplevilleMiddletownNarragansettNew ShorehamNewportNorth KingstownNorth ProvidenceNorth ScituateNorth SmithfieldOaklandPascoagPawtucketPeace DalePortsmouthProvidencePrudence IslandRichmondRiversideRockvilleRumfordSaunderstownScituateShannockSlatersvilleSlocumSmithfieldSouth KingstownTivertonWakefieldWarrenWarwickWest GreenwichWest KingstonWest WarwickWesterlyWood River JunctionWoonsocketWyoming