ZIP Code 78629
Moderate9
PFAS Detected
0
Above EPA Limits
2
Water Systems
N/A
Highest % of MCL
CITY OF GONZALES
TX0890001 ModerateWater Type
Surface Water
PFAS Detected
6
Above MCL
0
State
Texas
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
lithium | 13200.00ppt | No federal limit | — | Unregulated |
6:2 FTS 6:2 Fluorotelomer sulfonic acid | 597.00ppt | No federal limit | — | Unregulated |
PFPeA Perfluoropentanoic acid | 8.90ppt | No federal limit | — | Unregulated |
PFHxA Perfluorohexanoic acid | 5.20ppt | No federal limit | — | Unregulated |
PFBS Perfluorobutane sulfonic acid | 4.30ppt | No federal limit | — | Unregulated |
ADONA 4,8-Dioxa-3H-perfluorononanoic acid | 3.20ppt | No federal limit | — | Unregulated |
GONZALES COUNTY WSC
TX0890006 Low LevelWater Type
Groundwater
PFAS Detected
3
Above MCL
0
State
Texas
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
lithium | 50700.00ppt | No federal limit | — | Unregulated |
PFBA Perfluorobutanoic acid | 6.10ppt | No federal limit | — | Unregulated |
PFPeA Perfluoropentanoic acid | 4.10ppt | No federal limit | — | Unregulated |
Note: ZIP code 78629 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.