ZIP Code 77459
Low Level10
PFAS Detected
0
Above EPA Limits
3
Water Systems
N/A
Highest % of MCL
SIENNA PLANTATION MUD 2
TX0790345 Low LevelWater Type
Groundwater
PFAS Detected
2
Above MCL
0
State
Texas
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
PFPeA Perfluoropentanoic acid | 38.00ppt | No federal limit | — | Unregulated |
PFBA Perfluorobutanoic acid | 17.90ppt | No federal limit | — | Unregulated |
SIENNA PLANTATION MUD 3
TX0790376 Low LevelWater Type
Groundwater
PFAS Detected
4
Above MCL
0
State
Texas
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
PFPeA Perfluoropentanoic acid | 130.00ppt | No federal limit | — | Unregulated |
PFBA Perfluorobutanoic acid | 23.00ppt | No federal limit | — | Unregulated |
PFHxA Perfluorohexanoic acid | 4.70ppt | No federal limit | — | Unregulated |
PFBS Perfluorobutane sulfonic acid | 3.20ppt | No federal limit | — | Unregulated |
SIENNA PLANTATION MUD 10
TX0790452 Low LevelWater Type
Groundwater
PFAS Detected
4
Above MCL
0
State
Texas
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
PFPeA Perfluoropentanoic acid | 194.00ppt | No federal limit | — | Unregulated |
PFBA Perfluorobutanoic acid | 9.60ppt | No federal limit | — | Unregulated |
PFHxA Perfluorohexanoic acid | 5.70ppt | No federal limit | — | Unregulated |
PFBS Perfluorobutane sulfonic acid | 3.70ppt | No federal limit | — | Unregulated |
Note: ZIP code 77459 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.