ZIP Code 90058
High RiskPFAS above EPA limits detected
4 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.
14
PFAS Detected
4
Above EPA Limits
3
Water Systems
660%
Highest % of MCL
Compounds Exceeding EPA Limits
PFOS Exceeds EPA limit
0 ppt MCL: 4 ppt 215% of limit
Detected: 8.60 ppt
PFOA Exceeds EPA limit
0 ppt MCL: 4 ppt 233% of limit
Detected: 9.30 ppt
CALIFORNIA WATER SERVICE CO. - ELA
CA1910036 High RiskWater Type
Groundwater
PFAS Detected
5
Above MCL
1
State
California
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
PFOS Perfluorooctane sulfonic acid | 8.60ppt | 215% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFPeA Perfluoropentanoic acid | 12.90ppt | No federal limit | — | Unregulated |
PFBA Perfluorobutanoic acid | 8.00ppt | No federal limit | — | Unregulated |
PFHxA Perfluorohexanoic acid | 7.60ppt | No federal limit | — | Unregulated |
PFBS Perfluorobutane sulfonic acid | 4.90ppt | No federal limit | — | Unregulated |
COMMERCE-CITY, WATER DEPT.
CA1910050 High RiskWater Type
Groundwater
PFAS Detected
6
Above MCL
1
State
California
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
PFOA Perfluorooctanoic acid | 9.30ppt | 233% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFPeA Perfluoropentanoic acid | 17.40ppt | No federal limit | — | Unregulated |
PFHxA Perfluorohexanoic acid | 13.60ppt | No federal limit | — | Unregulated |
PFBS Perfluorobutane sulfonic acid | 9.70ppt | No federal limit | — | Unregulated |
PFBA Perfluorobutanoic acid | 7.50ppt | No federal limit | — | Unregulated |
PFHpA Perfluoroheptanoic acid | 5.10ppt | No federal limit | — | Unregulated |
MAYWOOD MUTUAL WATER CO. #3
CA1910086 High RiskWater Type
Groundwater
PFAS Detected
3
Above MCL
2
State
California
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
PFOS Perfluorooctane sulfonic acid | 26.40ppt | 660% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFOA Perfluorooctanoic acid | 7.30ppt | 183% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFHxS Perfluorohexane sulfonic acid | 6.10ppt | 61% of limit
| 10 ppt | Below limit |
Note: ZIP code 90058 is served by 3 separate water utilities.
Results above show data for each system independently.
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.