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CheckYourWater

PFAS Testing Results

Indiana

PFAS testing results for 230 water systems serving 4,805,578 residents.

Systems tested

230

23.9% had PFAS detections

Limits exceeded

19

8.3% of systems

Population affected

462K

served by systems over federal limits

Most common compound

11Cl-PF3OUdS

detected in 35 systems

Grade distribution

Every water system gets a letter grade based on how its worst detected PFAS compound compares to the federal Maximum Contaminant Level. Lower grades mean higher contamination.

A — 175 systems (76.1%)
B — 25 systems (10.9%)
C — 11 systems (4.8%)
D — 19 systems (8.3%)
F — 0 systems (0.0%)

How grades are calculated →

Communities exceeding federal limits

The water systems in Indiana where at least one PFAS compound exceeds the EPA Maximum Contaminant Level, sorted worst first.

System nameCityGradeWorst compoundTimes over limitPopulation
MARYSVILLE OTISCO NABB WATER CORP.MARYSVILLE
PFOA3.4x6.8K
INDIANA AMERICAN WATER - CHARLESTOWNGREENWOOD
PFOA3.3x8.7K
BROWN COUNTY WATER UTILITYMORGANTOWN
PFOA3.2x15K
PIKE-GIBSON WATER, INC.OAKLAND CITY
PFOA2.0x10K
SOUTH BEND WATER WORKSSOUTH BEND
PFOA1.9x115K
GREENVILLE WATER UTILITYGREENVILLE
PFOA1.8x4.9K
WEST TERRE HAUTE WATERCENTERPOINT
PFOS1.7x4.1K
PALMYRA WATER WORKSPAOLI
PFOA1.6x4.4K
HANOVER WATER DEPARTMENTHANOVER
PFOA1.6x2.6K
JACKSON COUNTY WATER UTILITYBROWNSTOWN
PFOA1.5x14K

Resources for taking action are available in our community toolkit.

What Indiana is doing about PFAS

As of April 2026, Indiana has not adopted state-level PFAS drinking water standards beyond the federal EPA limits finalized in April 2024. The Indiana Department of Environmental Management has coordinated with federal partners on UCMR 5 sampling and has not published enforceable state MCLs.

Public water systems in Indiana are subject to the federal compliance timeline requiring initial monitoring by 2027 and treatment installation by 2029.

Based on Indiana Department of Environmental Management publications.

All 230 tested water systems in Indiana

Sorted from lowest grade to highest. Click any system name for the full report. Filter by city or name with the search box below.

Showing 50 of 230 systems

GradeSystem nameCityWorst compoundvs. EPA limitPopulation
MARYSVILLE OTISCO NABB WATER CORP.MARYSVILLEPFOA3.4× the federal limit6.8K
INDIANA AMERICAN WATER - CHARLESTOWNGREENWOODPFOA3.3× the federal limit8.7K
BROWN COUNTY WATER UTILITYMORGANTOWNPFOA3.2× the federal limit15K
PIKE-GIBSON WATER, INC.OAKLAND CITYPFOA2.0× the federal limit10K
SOUTH BEND WATER WORKSSOUTH BENDPFOA1.9× the federal limit115K
GREENVILLE WATER UTILITYGREENVILLEPFOA1.8× the federal limit4.9K
WEST TERRE HAUTE WATERCENTERPOINTPFOS1.7× the federal limit4.1K
PALMYRA WATER WORKSPAOLIPFOA1.6× the federal limit4.4K
HANOVER WATER DEPARTMENTHANOVERPFOA1.6× the federal limit2.6K
JACKSON COUNTY WATER UTILITYBROWNSTOWNPFOA1.5× the federal limit14K
ELKHART PUBLIC WORKS AND UTILITIESELKHARTPFOA1.3× the federal limit46K
INDIANA AMERICAN WATER - TERRE HAUTEGREENWOODPFOS1.3× the federal limit68K
GIBSON WATER, INC.HAUBSTADTPFOA1.2× the federal limit4.8K
RAMSEY WATER COMPANY, INC.RAMSEYPFOA1.1× the federal limit16K
MADISON WATER DEPARTMENT, INMADISONPFOA1.1× the federal limit15K
TELL CITY WATER DEPARTMENTTELL CITYPFOA1.1× the federal limit9.3K
MISHAWAKA UTILITIESMISHAWAKAPFOS1.1× the federal limit50K
ANDERSON WATER DEPARTMENTANDERSONPFOS1.0× the federal limit59K
UNIVERSITY OF NOTRE DAMENOTRE DAMEPFOA1.0× the federal limit7.4K
SELLERSBURG WATER DEPARTMENTSELLERSBURGPFOA1.0× the federal limit16K
MOUNT VERNON WATER WORKSMOUNT VERNONPFOA1.0× the federal limit6.4K
PURDUE UNIV. WATER WORKSWEST LAFAYETTEPFHxS52% of federal limit50K
SOUTH PARK BUSINESS CENTERINDIANAPOLISPFPeABelow detection5.2K
COLUMBUS MUNICIPAL UTILITYCOLUMBUSPFPeABelow detection51K
SOUTHWESTERN BARTHOLOMEW WATER CORP.COLUMBUSPFPeABelow detection8.7K
WHITESTOWN SOUTHWHITESTOWNPFBABelow detection5.9K
PLAINFIELD WATER WORKSPLAINFIELDPFPeABelow detection34K
BARGERSVILLE WATER DEPARTMENTBARGERSVILLEPFPeABelow detection34K
CITIZENS WATER - INDIANAPOLISINDIANAPOLISPFPeABelow detection880K
SPEEDWAY WATER WORKSSPEEDWAYPFBABelow detection11K
CLINTON WATER UTILITYCLINTONPFHxSBelow federal limit4.8K
LIPPERT COMPONENTS (PLANT #30)ROCHESTERPFBABelow detection200
NEW HAVEN WATER DEPARTMENTNEW HAVENPFPeABelow detection16K
FORT WAYNE - 3 RIVERS FILTRATION PLANTFORT WAYNEPFPeABelow detection270K
IRELAND UTILITIES, INC.IRELANDPFBABelow detection4.4K
JASPER MUNICIPAL WATER UTILITYJASPERPFBABelow detection17K
GOSHEN WATER UTILITYGOSHENPFPeABelow detection32K
INDIANA AMERICAN WATER - NOBLESVILLEGREENWOODPFPeABelow detection46K
BROWNSBURG WATER WORKSBROWNSBURGPFPeABelow detection24K
DANVILLE WATER WORKSDANVILLEPFPeABelow detection11K
PLAINFIELD RE-ENTRY EDUCATIONAL FACILITYPLAINFIELDPFPeABelow detection4.5K
PITTSBORO WATER COMPANYBROWNSBURGPFPeABelow detection4.1K
CANAAN UTILITIESCANAANPFBSBelow detection4.4K
DUPONT WATER COMPANYCOMMISKEYPFBSBelow detection3.9K
INDIANA AMERICAN WATER - JOHNSON COUNTYGREENWOODPFPeABelow detection87K
WHITELAND WATER WORKSWHITELANDPFPeABelow detection6.0K
INDIANA AMERICAN WATER - WARSAWGREENWOODPFPeABelow detection14K
LAPORTE WATER WORKSLAPORTEPFBSBelow detection22K
INDIANA AMERICAN WATER - CRAWFORDSVILLEGREENWOODPFBSBelow detection16K
BATESVILLE WATER UTILITYBATESVILLEPFBABelow detection7.3K

Check your water system

Enter your zip code to see the PFAS results for the water system that serves your home.

Where this data comes from

  • EPA Unregulated Contaminant Monitoring Rule, 5th cycle (UCMR 5)
  • Testing period: 2023 to 2026
  • Federal limits: EPA Maximum Contaminant Levels finalized April 2024
  • Read the full methodology