ZIP Code 92342
High RiskPFAS above EPA limits detected
3 compounds exceed EPA Maximum Contaminant Levels in water serving this ZIP code. Standard pitcher filters like Brita do not remove PFAS. See filter recommendations below.
8
PFAS Detected
3
Above EPA Limits
1
Water System
575%
Highest % of MCL
Compounds Exceeding EPA Limits
PFOS Exceeds EPA limit
0 ppt MCL: 4 ppt 575% of limit
Detected: 23.00 ppt
PFOA Exceeds EPA limit
0 ppt MCL: 4 ppt 325% of limit
Detected: 13.00 ppt
PFHxS Exceeds EPA limit
0 ppt MCL: 10 ppt 146% of limit
Detected: 14.60 ppt
HELENDALE COMMUNITY SERVICE DISTRICT
CA3610112 High RiskWater Type
Groundwater
PFAS Detected
8
Above MCL
3
State
California
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
PFOS Perfluorooctane sulfonic acid | 23.00ppt | 575% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFOA Perfluorooctanoic acid | 13.00ppt | 325% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFHxS Perfluorohexane sulfonic acid | 14.60ppt | 146% of limit
| 10 ppt | ⚠ Exceeds MCL |
lithium | 14500.00ppt | No federal limit | — | Unregulated |
PFBA Perfluorobutanoic acid | 8.20ppt | No federal limit | — | Unregulated |
PFPeA Perfluoropentanoic acid | 6.70ppt | No federal limit | — | Unregulated |
PFHxA Perfluorohexanoic acid | 6.40ppt | No federal limit | — | Unregulated |
PFBS Perfluorobutane sulfonic acid | 6.00ppt | No federal limit | — | Unregulated |
Data source: EPA Unregulated Contaminant Monitoring Rule, 5th cycle (UCMR 5) — January 2026 release.
UCMR 5 tested ~10,000 public water systems serving more than 25 people between 2023-2025 for 29 PFAS compounds.
Detection values represent the highest single-sample result measured at entry points to the distribution system.