COLUMBUS PUBLIC WATER SYSTEM
High Risk1 PFAS compound(s) exceed EPA Maximum Contaminant Levels
This utility has until 2029 to install treatment under the EPA's April 2024 PFAS rule. In the meantime, a point-of-use filter certified NSF/ANSI 58 for PFOA/PFOS provides reliable interim protection.
6
PFAS Detected
1
Above EPA Limits
55
ZIPs Served
Groundwater
Water Source
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
PFOA Perfluorooctanoic acid | 5.30ppt | 133% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFHxA Perfluorohexanoic acid | 18.20ppt | No federal limit | — | Unregulated |
PFBA Perfluorobutanoic acid | 17.00ppt | No federal limit | — | Unregulated |
PFPeA Perfluoropentanoic acid | 14.20ppt | No federal limit | — | Unregulated |
PFBS Perfluorobutane sulfonic acid | 11.10ppt | No federal limit | — | Unregulated |
PFHpA Perfluoroheptanoic acid | 4.30ppt | No federal limit | — | Unregulated |
ZIP Codes Served by This Utility
43002 43004 43016 43017 43026 43031 43035 43054 43064 43065 43068 43081 43082 43085 43109 43110 43119 43123 43125 43130 43137 43146 43147 43201 43202 43203 43204 43205 43206 43207 43209 43210 43211 43212 43213 43214 43215 43216 43217 43218 43219 43220 43221 43222 43223 43224 43227 43228 43229 43230 43231 43232 43235 43236 43240
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About this data
Source
EPA UCMR 5 — January 2026 release
Sampling period
January 2023 – December 2025
Water system ID (PWSID)
OH2504412
Detection threshold (MRL)
~1.5–2 ppt — "Not detected" means below this floor