ZIP Code 93550
High RiskPFAS above EPA limits detected
1 compound exceed EPA Maximum Contaminant Levels in water serving this ZIP code. Standard pitcher filters like Brita do not remove PFAS. See filter recommendations below.
11
PFAS Detected
1
Above EPA Limits
2
Water Systems
138%
Highest % of MCL
Compounds Exceeding EPA Limits
PFOA Exceeds EPA limit
0 ppt MCL: 4 ppt 138% of limit
Detected: 5.50 ppt
NORTHROP GRUMMAN CORP.
CA1910097 High RiskWater Type
Groundwater
PFAS Detected
8
Above MCL
1
State
California
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
PFOA Perfluorooctanoic acid | 5.50ppt | 138% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFHxS Perfluorohexane sulfonic acid | 3.50ppt | 35% of limit
| 10 ppt | Below limit |
PFHxA Perfluorohexanoic acid | 136.80ppt | No federal limit | — | Unregulated |
PFBS Perfluorobutane sulfonic acid | 64.70ppt | No federal limit | — | Unregulated |
PFPeA Perfluoropentanoic acid | 37.60ppt | No federal limit | — | Unregulated |
PFPeS | 24.50ppt | No federal limit | — | Unregulated |
PFBA Perfluorobutanoic acid | 22.10ppt | No federal limit | — | Unregulated |
PFHpA Perfluoroheptanoic acid | 4.70ppt | No federal limit | — | Unregulated |
PALMDALE WATER DIST.
CA1910102 Low LevelWater Type
Groundwater
PFAS Detected
3
Above MCL
0
State
California
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
PFHxA Perfluorohexanoic acid | 6.30ppt | No federal limit | — | Unregulated |
PFPeA Perfluoropentanoic acid | 4.60ppt | No federal limit | — | Unregulated |
PFBS Perfluorobutane sulfonic acid | 4.50ppt | No federal limit | — | Unregulated |
Note: ZIP code 93550 is served by 2 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.