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Indiana Water Quality Ratings

TapWaterSafety has rated 18 public water systems in Indiana, serving a combined 3,645,510 residents. The statewide average grade is C.

Data sources: EPA SDWIS EPA ECHO EWG Tap Water Database Utility CCRs ⓘ How did we get these ratings?
State average grade
C
78/100
Total utilities rated 18
Population served 3,645,510
Most recent test 2024
🇪🇺 Would fail EU standards 5 of 18

Top water quality concerns in Indiana

  • Haloacetic acids (HAA9) significantly above health guideline
  • Total trihalomethanes (TTHMs) significantly above health guideline
  • Haloacetic acids (HAA5) significantly above health guideline
  • Arsenic significantly above health guideline
  • PFAS contamination

Grade distribution

A
6 (33%)
B
6 (33%)
C
5 (28%)
D
1 (6%)
F
0 (0%)