ZIP Code 79928
Moderate12
PFAS Detected
0
Above EPA Limits
4
Water Systems
N/A
Highest % of MCL
HORIZON REGIONAL MUD
TX0710005 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 |
|---|---|---|---|---|
lithium | 81500.00ppt | No federal limit | — | Unregulated |
LOWER VALLEY WATER DISTRICT
TX0710154 Low LevelWater Type
Surface Water
PFAS Detected
4
Above MCL
0
State
Texas
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
lithium | 75700.00ppt | No federal limit | — | Unregulated |
PFBA Perfluorobutanoic acid | 5.30ppt | No federal limit | — | Unregulated |
PFHxA Perfluorohexanoic acid | 3.40ppt | No federal limit | — | Unregulated |
PFPeA Perfluoropentanoic acid | 3.30ppt | No federal limit | — | Unregulated |
EAST MONTANA WATER SYSTEM
TX0710178 ModerateWater Type
Surface Water
PFAS Detected
5
Above MCL
0
State
Texas
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
lithium | 76300.00ppt | No federal limit | — | Unregulated |
PFPeA Perfluoropentanoic acid | 6.00ppt | No federal limit | — | Unregulated |
PFBA Perfluorobutanoic acid | 5.70ppt | No federal limit | — | Unregulated |
PFHxA Perfluorohexanoic acid | 4.30ppt | No federal limit | — | Unregulated |
PFBS Perfluorobutane sulfonic acid | 3.10ppt | No federal limit | — | Unregulated |
PASEO DEL ESTE MUD 1
TX0710186 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 |
|---|---|---|---|---|
lithium | 107000.00ppt | No federal limit | — | Unregulated |
PFBS Perfluorobutane sulfonic acid | 3.60ppt | No federal limit | — | Unregulated |
Note: ZIP code 79928 is served by 4 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.