Dayton, Ohio Water Quality Report
Water quality data for 8 water systems serving 150,850 people.
Water Source
Detected Contaminants
| Contaminant | Detected Level | EPA Limit (MCL) | Health Guideline | % of Limit | Status |
|---|---|---|---|---|---|
| PFBS | 0.003 | No federal limit | 2000.0 ug/L(EPA Health Advisory) | 0% | Below guideline |
| PFHxA | 0.004 | No federal limit | 1000.0 ug/L(EWG) | 0% | Below guideline |
| PFHxS | 0.011 | 0.010 ug/L | 0.001 ug/L(EWG) | 107% | Above limit |
| PFOS | 0.011 | 0.004 ug/L | 0.300 ug/L(EWG) | 263% | Above limit |
| PFPeA | 0.005 | 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 (17)
71
Jul 1, 2025
4G
Oct 17, 2024
4G
Oct 17, 2024
4G
Oct 17, 2024
4G
Oct 17, 2024
71
Jul 1, 2024
71
Jul 1, 2024
71
Jul 1, 2024
72
Sep 28, 2023
71
Jul 1, 2020
72
Feb 6, 2020
72
Jan 16, 2020
72
Nov 5, 2018
71
Jul 1, 2016
71
Jul 1, 2012
71
Jul 1, 2012
71
Jul 1, 2011
Resolved Violations (483)
71
Jul 1, 2025
71
Jul 1, 2025
71
Jul 1, 2025
71
Jul 1, 2025
2E
Oct 17, 2024
+ 478 more resolved violations
Frequently Asked Questions
Is Dayton tap water safe to drink?
Dayton's water has 2 contaminants detected above EPA limits. While the water is treated, residents may want to consider additional filtration.
What contaminants are in Dayton tap water?
5 contaminants have been detected in Dayton's water supply across 8 water systems. See the full contaminant table above for details.
How can I improve my water quality in Dayton?
Install a water filter rated for the specific contaminants found in Dayton's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does Dayton have any water quality violations?
Yes, Dayton currently has 53 active violations. See the violations section above for details.