ZIP Code 77429
Moderate26
PFAS Detected
0
Above EPA Limits
14
Water Systems
31%
Highest % of MCL
What this means for you
PFAS were detected at this water system, but below the EPA's Maximum Contaminant Level. "Below the limit" doesn't mean no risk — it means EPA considers the concentration acceptable across a lifetime of consumption at that level. Some people, particularly pregnant women, infants, and those with compromised immune systems, may wish to take additional precaution. Using a filter certified NSF/ANSI 58 for PFOA/PFOS reduction is a reasonable step that costs little and eliminates this variable entirely. Continue reading your utility's annual Consumer Confidence Report for year-to-year trends.
HARRIS COUNTY FWSD 61
TX1010237 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 | 25900.00ppt | No federal limit | — | Unregulated |
LAKE FOREST UTILITY DISTRICT
TX1010494 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 |
|---|---|---|---|---|
PFPeA Perfluoropentanoic acid | 5.30ppt | No federal limit | — | Unregulated |
PFBA Perfluorobutanoic acid | 5.20ppt | No federal limit | — | Unregulated |
PFHxA Perfluorohexanoic acid | 3.70ppt | No federal limit | — | Unregulated |
HARRIS COUNTY MUD 18 HEATHERWOOD HUNTERS
TX1010512 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 |
|---|---|---|---|---|
lithium | 29200.00ppt | No federal limit | — | Unregulated |
PFPeA Perfluoropentanoic acid | 6.00ppt | No federal limit | — | Unregulated |
PFHxA Perfluorohexanoic acid | 4.00ppt | No federal limit | — | Unregulated |
HARRIS COUNTY MUD 69
TX1010600 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 | 11500.00ppt | No federal limit | — | Unregulated |
NORTHWEST HARRIS COUNTY MUD 5
TX1010884 Low LevelWater Type
MX
PFAS Detected
4
Above MCL
0
State
Texas
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
lithium | 87400.00ppt | No federal limit | — | Unregulated |
PFBA Perfluorobutanoic acid | 19.20ppt | No federal limit | — | Unregulated |
PFPeA Perfluoropentanoic acid | 11.90ppt | No federal limit | — | Unregulated |
PFHxA Perfluorohexanoic acid | 6.00ppt | No federal limit | — | Unregulated |
NORTHWEST HARRIS COUNTY MUD 9
TX1011599 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 | 9850.00ppt | No federal limit | — | Unregulated |
FAULKEY GULLY MUD
TX1011602 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 | 5.90ppt | No federal limit | — | Unregulated |
NORTHWEST HARRIS COUNTY MUD 10
TX1011649 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 | 42800.00ppt | No federal limit | — | Unregulated |
CYPRESS HILL MUD 1
TX1012378 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 | 41600.00ppt | No federal limit | — | Unregulated |
HARRIS COUNTY MUD 360
TX1012897 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 | 36600.00ppt | No federal limit | — | Unregulated |
HARRIS COUNTY MUD 365
TX1013009 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 | 35600.00ppt | No federal limit | — | Unregulated |
LAKES OF ROSEHILL WATER SYSTEM
TX1013050 ModerateWater Type
Groundwater
PFAS Detected
6
Above MCL
0
State
Texas
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
PFHxS Perfluorohexane sulfonic acid | 3.10ppt | 31% of limit
| 10 ppt | Below limit |
lithium | 9110.00ppt | No federal limit | — | Unregulated |
PFBA Perfluorobutanoic acid | 6.90ppt | No federal limit | — | Unregulated |
PFPeA Perfluoropentanoic acid | 6.30ppt | No federal limit | — | Unregulated |
PFHxA Perfluorohexanoic acid | 5.10ppt | No federal limit | — | Unregulated |
PFBS Perfluorobutane sulfonic acid | 3.20ppt | No federal limit | — | Unregulated |
HARRIS COUNTY MUD 364
TX1013132 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 | 37200.00ppt | No federal limit | — | Unregulated |
HARRIS COUNTY MUD 391
TX1013253 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 | 36800.00ppt | No federal limit | — | Unregulated |
Note: ZIP code 77429 is served by 14 separate water utilities.
Results above show data for each system independently.
About this data
Source
EPA UCMR 5 (Unregulated Contaminant Monitoring Rule, 5th cycle)
Data released
January 2026
Sampling period
January 2023 – December 2025
Systems tested
~10,000 public water systems serving > 25 people
Water systems (PWSID)
TX1010237, TX1010494, TX1010512, TX1010600, TX1010884, TX1011599, TX1011602, TX1011649, TX1012378, TX1012897, TX1013009, TX1013050, TX1013132, TX1013253
Detection threshold (MRL)
~1.5–2 ppt — "Not detected" means below this floor, not zero
Values shown are the highest single-sample concentration measured at entry points to the distribution system. Results reflect water quality at the treatment plant — aging pipes, building plumbing, and on-site storage can affect what actually reaches your tap.