ZIP Code 79607
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.
9
PFAS Detected
3
Above EPA Limits
1
Water System
525%
Highest % of MCL
Compounds Exceeding EPA Limits
PFOS Exceeds EPA limit
0 ppt MCL: 4 ppt 525% of limit
Detected: 21.00 ppt
PFHxS Exceeds EPA limit
0 ppt MCL: 10 ppt 190% of limit
Detected: 19.00 ppt
PFOA Exceeds EPA limit
0 ppt MCL: 4 ppt 155% of limit
Detected: 6.20 ppt
DYESS AIR FORCE BASE
TX2210013 High RiskWater Type
Surface Water
PFAS Detected
9
Above MCL
3
State
Texas
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
PFOS Perfluorooctane sulfonic acid | 21.00ppt | 525% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFHxS Perfluorohexane sulfonic acid | 19.00ppt | 190% of limit
| 10 ppt | ⚠ Exceeds MCL |
PFOA Perfluorooctanoic acid | 6.20ppt | 155% of limit
| 4 ppt | ⚠ Exceeds MCL |
lithium | 18800.00ppt | No federal limit | — | Unregulated |
PFBA Perfluorobutanoic acid | 20.00ppt | No federal limit | — | Unregulated |
PFHxA Perfluorohexanoic acid | 15.00ppt | No federal limit | — | Unregulated |
PFPeA Perfluoropentanoic acid | 13.40ppt | No federal limit | — | Unregulated |
PFHpA Perfluoroheptanoic acid | 7.40ppt | No federal limit | — | Unregulated |
Show 1 more compound detected at low levels
| PFBSPerfluorobutane sulfonic acid | 7.10 ppt | No federal limit |
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.