Tap water quality in Indiana
Indiana has some of the best tap water in the country — a quality score of 95.2/100 ranks #8 of 51, and its water systems averaged 2.0 health-based violations each in 2024 — better than the U.S. average of 2.5.
Averages describe states, not your faucet. A certified home water test screens for lead, nitrates, bacteria and dozens of other contaminants — the same categories EPA regulates.
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How Indiana compares with its neighbors
Crossing a state line changes your costs more than almost any other single factor. Here's Indiana next to nearby states:
City water quality in Indiana
Statewide averages hide a lot — each city below links to its own water systems and EPA violation history.
Indiana tap water quality FAQ
How clean is the tap water in Indiana?
Indiana scores 95.2/100 in TapWaterData's 2026 population-weighted analysis of EPA violation records — rank #8 of 51 (1 = best). Its community water systems averaged 2.0 health-based violations each in 2024, versus a 2.5 U.S. average. Individual utilities vary widely; check your utility's Consumer Confidence Report for your exact system.
What are the biggest health risks in Indiana tap water?
The score reflects contaminants that exceeded EPA limits or health guidelines somewhere in the state — most commonly bacteria (coliform), disinfection byproducts, nitrates in agricultural areas, and lead from old service lines. Below-average violations per system is a good sign, but small rural systems and private wells still warrant testing. EPA's new PFAS limits (finalized 2024) are also starting to appear in utility reports.
How do I check my own city's water?
Every community water system must publish an annual Consumer Confidence Report (CCR) — search your utility's name plus 'water quality report,' or find it through EPA's CCR search. If you're on a private well, no one tests it but you: a certified lab test ($50–$200 per Angi) covering bacteria, nitrates and metals is the standard recommendation.
Does a filter fix a violation?
The right filter for the right contaminant does: certified reverse osmosis removes most dissolved contaminants including lead, nitrates and PFAS at the tap ($150–$1,300 installed per Angi 2026); activated carbon handles taste, odor and disinfection byproducts. Look for NSF/ANSI certification for the specific contaminant, and test first so you're treating what's actually there — our purification calculator walks through it.
Averages describe states, not your faucet. A certified home water test screens for lead, nitrates, bacteria and dozens of other contaminants — the same categories EPA regulates.
Test your water at homeWe may earn a commission if you request quotes through this link. It costs you nothing and never affects the data we publish.