LIBERTY UTILITIES - BELLFLOWER-NORWALK
High Risk3 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.
9
PFAS Detected
3
Above EPA Limits
5
ZIPs Served
Groundwater
Water Source
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
PFOS Perfluorooctane sulfonic acid | 59.00ppt | 1475% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFOA Perfluorooctanoic acid | 16.00ppt | 400% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFHxS Perfluorohexane sulfonic acid | 11.00ppt | 110% of limit
| 10 ppt | ⚠ Exceeds MCL |
lithium | 88600.00ppt | No federal limit | — | Unregulated |
PFPeA Perfluoropentanoic acid | 17.00ppt | No federal limit | — | Unregulated |
PFHxA Perfluorohexanoic acid | 10.00ppt | No federal limit | — | Unregulated |
PFBS Perfluorobutane sulfonic acid | 8.90ppt | No federal limit | — | Unregulated |
PFBA Perfluorobutanoic acid | 8.70ppt | No federal limit | — | Unregulated |
Show 1 more compound detected at low levels
| PFHpAPerfluoroheptanoic acid | 3.90 ppt | No federal limit |
ZIP Codes Served by This Utility
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About this data
Source
EPA UCMR 5 — January 2026 release
Sampling period
January 2023 – December 2025
Water system ID (PWSID)
CA1910211
Detection threshold (MRL)
~1.5–2 ppt — "Not detected" means below this floor