Fairfield, Ohio Water Quality Report
Water quality data for 2 water systems serving 107,354 people.
Water Source
Detected Contaminants
| Contaminant | Detected Level | EPA Limit (MCL) | Health Guideline | % of Limit | Status |
|---|---|---|---|---|---|
| HFPO-DA | 0.006 | 0.010 ug/L | — | 57% | Within limit |
| 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 | 0.003 | No federal limit | 1000.0 ug/L(EWG) | 0% | Below guideline |
| PFHxS | 0.004 | 0.010 ug/L | 0.001 ug/L(EWG) | 41% | Within limit |
| PFOA | 0.005 | 0.004 ug/L | 0.090 ug/L(EWG) | 133% | Above limit |
| PFPeA | 0.004 | 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 (6)
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Resolved Violations (71)
27
Apr 1, 2025 — Apr 30, 2025
27
Apr 1, 2025 — Apr 30, 2025
72
Dec 23, 2019
72
Dec 23, 2019
72
Jan 10, 2019
+ 66 more resolved violations
Frequently Asked Questions
Is Fairfield tap water safe to drink?
Fairfield's water has 1 contaminant detected above EPA limits. While the water is treated, residents may want to consider additional filtration.
What contaminants are in Fairfield tap water?
7 contaminants have been detected in Fairfield's water supply across 2 water systems. See the full contaminant table above for details.
How can I improve my water quality in Fairfield?
Install a water filter rated for the specific contaminants found in Fairfield's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does Fairfield have any water quality violations?
Yes, Fairfield currently has 6 active violations. See the violations section above for details.