ZIP Code 77449
Moderate25
PFAS Detected
0
Above EPA Limits
9
Water Systems
37%
Highest % of MCL
HARRIS COUNTY MUD 105
TX1011227 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 |
|---|---|---|---|---|
PFBA Perfluorobutanoic acid | 5.80ppt | No federal limit | — | Unregulated |
PFPeA Perfluoropentanoic acid | 4.10ppt | No federal limit | — | Unregulated |
PFHxA Perfluorohexanoic acid | 3.80ppt | No federal limit | — | Unregulated |
LANGHAM CREEK UTILITY DISTRICT
TX1011249 ModerateWater Type
MX
PFAS Detected
5
Above MCL
0
State
Texas
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
PFHxS Perfluorohexane sulfonic acid | 3.30ppt | 33% of limit
| 10 ppt | Below limit |
PFBA Perfluorobutanoic acid | 9.10ppt | No federal limit | — | Unregulated |
PFPeA Perfluoropentanoic acid | 7.40ppt | No federal limit | — | Unregulated |
PFHxA Perfluorohexanoic acid | 6.30ppt | No federal limit | — | Unregulated |
PFBS Perfluorobutane sulfonic acid | 3.70ppt | No federal limit | — | Unregulated |
HARRIS COUNTY MUD 157
TX1011430 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 |
|---|---|---|---|---|
PFHxS Perfluorohexane sulfonic acid | 3.70ppt | 37% of limit
| 10 ppt | Below limit |
PFHxA Perfluorohexanoic acid | 9.90ppt | No federal limit | — | Unregulated |
PFPeA Perfluoropentanoic acid | 8.20ppt | No federal limit | — | Unregulated |
PFBS Perfluorobutane sulfonic acid | 4.30ppt | No federal limit | — | Unregulated |
CLAY ROAD MUD
TX1011681 Low LevelWater Type
Surface Water
PFAS Detected
3
Above MCL
0
State
Texas
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
PFBA Perfluorobutanoic acid | 7.70ppt | No federal limit | — | Unregulated |
PFPeA Perfluoropentanoic acid | 4.60ppt | No federal limit | — | Unregulated |
PFHxA Perfluorohexanoic acid | 4.30ppt | No federal limit | — | Unregulated |
MAYDE CREEK MUD
TX1011689 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 |
|---|---|---|---|---|
PFBA Perfluorobutanoic acid | 5.10ppt | No federal limit | — | Unregulated |
PFPeA Perfluoropentanoic acid | 4.60ppt | No federal limit | — | Unregulated |
PFHxA Perfluorohexanoic acid | 4.00ppt | No federal limit | — | Unregulated |
WESTERN PINES MHP
TX1011714 Low LevelWater Type
Groundwater
PFAS Detected
1
Above MCL
0
State
Texas
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
PFBA Perfluorobutanoic acid | 5.60ppt | No federal limit | — | Unregulated |
NORTHWEST HARRIS COUNTY MUD 12
TX1011901 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 | 5.00ppt | No federal limit | — | Unregulated |
PFHxA Perfluorohexanoic acid | 3.60ppt | No federal limit | — | Unregulated |
HARRIS COUNTY MUD 165
TX1012187 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 | 4.70ppt | No federal limit | — | Unregulated |
PFHxA Perfluorohexanoic acid | 4.10ppt | No federal limit | — | Unregulated |
HARRIS COUNTY MUD 127
TX1012229 Low LevelWater Type
Surface Water
PFAS Detected
2
Above MCL
0
State
Texas
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
PFBA Perfluorobutanoic acid | 5.90ppt | No federal limit | — | Unregulated |
PFPeA Perfluoropentanoic acid | 3.30ppt | No federal limit | — | Unregulated |
Note: ZIP code 77449 is served by 9 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.