ZIP Code 75234
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.
14
PFAS Detected
3
Above EPA Limits
2
Water Systems
158%
Highest % of MCL
Compounds Exceeding EPA Limits
PFOA Exceeds EPA limit
0 ppt MCL: 4 ppt 158% of limit
Detected: 6.30 ppt
PFOS Exceeds EPA limit
0 ppt MCL: 4 ppt 128% of limit
Detected: 5.10 ppt
DALLAS WATER UTILITY
TX0570004 High RiskWater Type
Surface Water
PFAS Detected
8
Above MCL
2
State
Texas
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
PFOA Perfluorooctanoic acid | 6.30ppt | 158% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFOS Perfluorooctane sulfonic acid | 5.10ppt | 128% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFHxS Perfluorohexane sulfonic acid | 3.80ppt | 38% of limit
| 10 ppt | Below limit |
PFPeA Perfluoropentanoic acid | 18.20ppt | No federal limit | — | Unregulated |
PFHxA Perfluorohexanoic acid | 17.90ppt | No federal limit | — | Unregulated |
PFBA Perfluorobutanoic acid | 13.20ppt | No federal limit | — | Unregulated |
PFBS Perfluorobutane sulfonic acid | 7.60ppt | No federal limit | — | Unregulated |
PFHpA Perfluoroheptanoic acid | 6.00ppt | No federal limit | — | Unregulated |
CITY OF FARMERS BRANCH
TX0570047 High RiskWater Type
Surface Water
PFAS Detected
6
Above MCL
1
State
Texas
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
PFOA Perfluorooctanoic acid | 4.70ppt | 118% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFHxA Perfluorohexanoic acid | 15.00ppt | No federal limit | — | Unregulated |
PFPeA Perfluoropentanoic acid | 14.50ppt | No federal limit | — | Unregulated |
PFBA Perfluorobutanoic acid | 11.80ppt | No federal limit | — | Unregulated |
PFBS Perfluorobutane sulfonic acid | 5.70ppt | No federal limit | — | Unregulated |
PFHpA Perfluoroheptanoic acid | 3.80ppt | No federal limit | — | Unregulated |
Note: ZIP code 75234 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.