WESTERN WATER COMPANY
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.
1
PFAS Detected
1
Above EPA Limits
18
ZIPs Served
Groundwater
Water Source
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
PFOS Perfluorooctane sulfonic acid | 14.10ppt | 353% of limit
| 4 ppt | ⚠ Exceeds MCL |
ZIP Codes Served by This Utility
45036 45039 45054 45065 45068 45107 45113 45114 45118 45122 45140 45152 45154 45158 45160 45162 45164 45177
Click any ZIP to see the full result page for that area.
About this data
Source
EPA UCMR 5 — January 2026 release
Sampling period
January 2023 – December 2025
Water system ID (PWSID)
OH8300512
Detection threshold (MRL)
~1.5–2 ppt — "Not detected" means below this floor