Does Columbus, Ohio water have PFAS?
Yes. The 2024 Columbus Water Quality Report shows detectable levels of PFAS compounds including PFOA and PFOS in Columbus tap water. Measured levels are currently below EPA maximum contaminant levels (MCLs), but new EPA rules effective 2026 set limits 10–100x stricter than previous standards. Reverse osmosis is the most effective residential treatment for PFAS removal.
Based on 2024 Columbus Water Works Annual Water Quality Report and EPA PFAS regulations
What are PFAS "forever chemicals"?
PFAS (per- and polyfluoroalkyl substances) are a group of thousands of synthetic chemicals used in manufacturing since the 1940s. They're called "forever chemicals" because they don't break down in the environment or in the human body.
PFAS have been used in non-stick cookware, water-resistant clothing, food packaging, firefighting foam, and hundreds of industrial applications. They've contaminated water supplies across the United States, including Central Ohio.
Health concerns associated with PFAS exposure include increased cancer risk, thyroid disruption, immune system effects, and developmental issues in children. The EPA has classified PFOA and PFOS as likely carcinogens.
PFAS levels in Columbus water — the data
Source: 2024 Columbus Water Works Annual Water Quality Report
| Compound | Detected | New EPA limit (2026) |
|---|---|---|
| PFOA | Yes | 4 ppt |
| PFOS | Yes | 4 ppt |
| PFNA | Trace | 10 ppt |
| PFHxS | Trace | 10 ppt |
New EPA PFAS rules — what changed in 2024
In April 2024, the EPA finalized the first-ever national drinking water standards for PFAS. The new maximum contaminant levels (MCLs) are dramatically stricter than previous guidance — PFOA and PFOS limits dropped to 4 parts per trillion, down from 70 ppt. Water utilities have until 2029 to comply. Columbus Water Works is currently evaluating treatment upgrades.
How to remove PFAS from your Columbus drinking water
Frequently asked questions
Related resources
Don't wait for the utility to upgrade. Protect your family now.
A free in-home water test measures your PFAS risk, TDS, chloramine, and hardness. We'll show you exactly what's in your water and what an RO system would remove.