CheckPFAS

ZIP Code 77459

Moderate
Moderate PFAS Risk Level
19
PFAS Detected
0
Above EPA Limits
9
Water Systems
N/A
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.

QUAIL VALLEY UTILITY DISTRICT

TX0790028 Low Level
Water Type
Groundwater
PFAS Detected
1
Above MCL
0
State
Texas
Data Period
2023–2025

PFAS Test Results

CompoundDetectedvs. EPA LimitEPA LimitStatus
lithium
15700.00pptNo federal limitUnregulated

THUNDERBIRD UTILITY DISTRICT 1

TX0790033 Low Level
Water Type
Groundwater
PFAS Detected
1
Above MCL
0
State
Texas
Data Period
2023–2025

PFAS Test Results

CompoundDetectedvs. EPA LimitEPA LimitStatus
lithium
21000.00pptNo federal limitUnregulated

FORT BEND COUNTY MUD 26 QUAIL GREEN WEST

TX0790137 Low Level
Water Type
Groundwater
PFAS Detected
1
Above MCL
0
State
Texas
Data Period
2023–2025

PFAS Test Results

CompoundDetectedvs. EPA LimitEPA LimitStatus
lithium
17000.00pptNo federal limitUnregulated

FIRST COLONY MUD 9

TX0790230 Low Level
Water Type
Groundwater
PFAS Detected
1
Above MCL
0
State
Texas
Data Period
2023–2025

PFAS Test Results

CompoundDetectedvs. EPA LimitEPA LimitStatus
lithium
17600.00pptNo federal limitUnregulated

FORT BEND COUNTY MUD 42 WAT PLAT

TX0790254 Low Level
Water Type
Groundwater
PFAS Detected
1
Above MCL
0
State
Texas
Data Period
2023–2025

PFAS Test Results

CompoundDetectedvs. EPA LimitEPA LimitStatus
lithium
15000.00pptNo federal limitUnregulated

FORT BEND COUNTY MUD 48

TX0790267 Low Level
Water Type
Groundwater
PFAS Detected
1
Above MCL
0
State
Texas
Data Period
2023–2025

PFAS Test Results

CompoundDetectedvs. EPA LimitEPA LimitStatus
lithium
20900.00pptNo federal limitUnregulated

SIENNA PLANTATION MUD 2

TX0790345 Low Level
Water Type
Groundwater
PFAS Detected
3
Above MCL
0
State
Texas
Data Period
2023–2025

PFAS Test Results

CompoundDetectedvs. EPA LimitEPA LimitStatus
lithium
16400.00pptNo federal limitUnregulated
PFPeA
Perfluoropentanoic acid
38.00pptNo federal limitUnregulated
PFBA
Perfluorobutanoic acid
17.90pptNo federal limitUnregulated

SIENNA PLANTATION MUD 3

TX0790376 Moderate
Water Type
Groundwater
PFAS Detected
5
Above MCL
0
State
Texas
Data Period
2023–2025

PFAS Test Results

CompoundDetectedvs. EPA LimitEPA LimitStatus
lithium
25000.00pptNo federal limitUnregulated
PFPeA
Perfluoropentanoic acid
130.00pptNo federal limitUnregulated
PFBA
Perfluorobutanoic acid
23.00pptNo federal limitUnregulated
PFHxA
Perfluorohexanoic acid
4.70pptNo federal limitUnregulated
PFBS
Perfluorobutane sulfonic acid
3.20pptNo federal limitUnregulated

SIENNA PLANTATION MUD 10

TX0790452 Moderate
Water Type
Groundwater
PFAS Detected
5
Above MCL
0
State
Texas
Data Period
2023–2025

PFAS Test Results

CompoundDetectedvs. EPA LimitEPA LimitStatus
lithium
19200.00pptNo federal limitUnregulated
PFPeA
Perfluoropentanoic acid
194.00pptNo federal limitUnregulated
PFBA
Perfluorobutanoic acid
9.60pptNo federal limitUnregulated
PFHxA
Perfluorohexanoic acid
5.70pptNo federal limitUnregulated
PFBS
Perfluorobutane sulfonic acid
3.70pptNo federal limitUnregulated
Note: ZIP code 77459 is served by 9 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)
TX0790028, TX0790033, TX0790137, TX0790230, TX0790254, TX0790267, TX0790345, TX0790376, TX0790452
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.