Columbus, Ohio Water Quality Report
Water quality data for 17 water systems serving 1,338,000 people.
Water Source
Detected Contaminants
| Contaminant | Detected Level | EPA Limit (MCL) | Health Guideline | % of Limit | Status |
|---|---|---|---|---|---|
| lithium | 27.0 | No federal limit | 10.0 ug/L(EPA/USGS HBSL) | 270% | Above guideline |
| PFBA | 0.017 | No federal limit | 1000.0 ug/L(EWG) | 0% | Below guideline |
| PFBS | 0.011 | No federal limit | 2000.0 ug/L(EPA Health Advisory) | 0% | Below guideline |
| PFHpA | 0.005 | No federal limit | 1000.0 ug/L(EWG) | 0% | Below guideline |
| PFHxA | 0.022 | No federal limit | 1000.0 ug/L(EWG) | 0% | Below guideline |
| PFOA | 0.007 | 0.004 ug/L | 0.090 ug/L(EWG) | 180% | Above limit |
| PFPeA | 0.017 | 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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Connect with a certified water treatment professional in Columbus, Ohio.
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Compliance & Violations
Active Violations (31)
71
Jul 1, 2025
72
Dec 30, 2024
72
Dec 20, 2024
72
Dec 18, 2024
2E
Oct 17, 2024
2E
Oct 17, 2024
2E
Oct 17, 2024
4G
Oct 17, 2024
4G
Oct 17, 2024
2E
Oct 17, 2024
72
Sep 28, 2023
72
Jan 5, 2023
72
Sep 21, 2022
72
Jan 1, 2022
72
Oct 27, 2020
72
Feb 6, 2020
72
Feb 5, 2020
72
Jan 29, 2020
72
Jan 28, 2020
72
Jan 21, 2020
72
Jan 9, 2020
72
Jan 22, 2019
72
Jan 15, 2019
72
Jan 15, 2019
72
Jan 10, 2019
72
Dec 13, 2018
72
Nov 8, 2018
72
Nov 6, 2018
71
Jul 1, 2014
71
Jul 1, 2014
71
Jul 1, 2011
Resolved Violations (469)
71
Jul 1, 2025
71
Jul 1, 2025
2E
Oct 17, 2024
2E
Oct 17, 2024
2E
Oct 17, 2024
+ 464 more resolved violations
Frequently Asked Questions
Is Columbus tap water safe to drink?
Columbus'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 Columbus tap water?
7 contaminants have been detected in Columbus's water supply across 17 water systems. See the full contaminant table above for details.
How can I improve my water quality in Columbus?
Install a water filter rated for the specific contaminants found in Columbus's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does Columbus have any water quality violations?
Yes, Columbus currently has 126 active violations. See the violations section above for details.