ZIP Code 77530
Moderate15
PFAS Detected
0
Above EPA Limits
5
Water Systems
40%
Highest % of MCL
HARRIS COUNTY WCID 84
TX1010113 Low LevelWater Type
MX
PFAS Detected
2
Above MCL
0
State
Texas
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
lithium | 17500.00ppt | No federal limit | — | Unregulated |
PFHxA Perfluorohexanoic acid | 3.30ppt | No federal limit | — | Unregulated |
HARRIS COUNTY FWSD 47
TX1010260 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 | 17000.00ppt | No federal limit | — | Unregulated |
PFBA Perfluorobutanoic acid | 6.50ppt | No federal limit | — | Unregulated |
PFPeA Perfluoropentanoic acid | 3.60ppt | No federal limit | — | Unregulated |
PFHxA Perfluorohexanoic acid | 3.30ppt | No federal limit | — | Unregulated |
HARRIS COUNTY MUD 53
TX1010720 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 |
|---|---|---|---|---|
PFHxS Perfluorohexane sulfonic acid | 4.00ppt | 40% of limit
| 10 ppt | Below limit |
PFPeA Perfluoropentanoic acid | 7.80ppt | No federal limit | — | Unregulated |
PFBA Perfluorobutanoic acid | 7.80ppt | No federal limit | — | Unregulated |
PFHxA Perfluorohexanoic acid | 7.00ppt | No federal limit | — | Unregulated |
PFBS Perfluorobutane sulfonic acid | 3.80ppt | No federal limit | — | Unregulated |
HARRIS COUNTY FWSD 6
TX1010768 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 | 16500.00ppt | No federal limit | — | Unregulated |
HARRIS COUNTY WCID 21
TX1010769 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 | 18100.00ppt | No federal limit | — | Unregulated |
PFBA Perfluorobutanoic acid | 8.20ppt | No federal limit | — | Unregulated |
PFHxA Perfluorohexanoic acid | 3.60ppt | No federal limit | — | Unregulated |
Note: ZIP code 77530 is served by 5 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.