Indianapolis, Indiana Water Quality Report
Water quality data for 21 water systems serving 1,007,220 people.
Water Source
Detected Contaminants
| Contaminant | Detected Level | EPA Limit (MCL) | Health Guideline | % of Limit | Status |
|---|---|---|---|---|---|
| lithium | 14.2 | No federal limit | 10.0 ug/L(EPA/USGS HBSL) | 142% | Above guideline |
| PFBA | 0.006 | No federal limit | 1000.0 ug/L(EWG) | 0% | Below guideline |
| PFBS | 0.004 | No federal limit | 2000.0 ug/L(EPA Health Advisory) | 0% | Below guideline |
| PFHxA | 0.005 | No federal limit | 1000.0 ug/L(EWG) | 0% | Below guideline |
| PFPeA | 0.008 | No federal limit | 1000.0 ug/L(EWG) | 0% | Below guideline |
Recommended Water Filters
Based on the contaminants detected in your water supply, these filtration systems are recommended:
Reverse Osmosis (RO)
Reverse osmosis systems remove up to 99% of PFAS compounds. Recommended for homes with detected PFAS.
Up to 99% PFAS removal
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Compliance & Violations
Active Violations (10)
4H
Jul 2, 2025
4H
Jul 2, 2025
4H
Jul 2, 2025
2E
Oct 17, 2024
4G
Oct 17, 2024
4G
Oct 17, 2024
2E
Oct 17, 2024
72
Oct 7, 2024
66
Jan 1, 2024
66
Jan 1, 2024
Resolved Violations (490)
02
Jul 1, 2025 — Sep 30, 2025
02
Apr 1, 2025 — Jun 30, 2025
02
Apr 1, 2025 — Jun 30, 2025
3A
Feb 1, 2025 — Feb 28, 2025
3A
Feb 1, 2025 — Feb 28, 2025
+ 485 more resolved violations
Frequently Asked Questions
Is Indianapolis tap water safe to drink?
Indianapolis's water meets all EPA maximum contaminant levels. However, 5 contaminants were detected at various levels. Some residents may prefer additional filtration for peace of mind.
What contaminants are in Indianapolis tap water?
5 contaminants have been detected in Indianapolis's water supply across 21 water systems. See the full contaminant table above for details.
How can I improve my water quality in Indianapolis?
Install a water filter rated for the specific contaminants found in Indianapolis's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does Indianapolis have any water quality violations?
Yes, Indianapolis currently has 93 active violations. See the violations section above for details.