CheckPFAS

ZIP Code 77498

High Risk
High Risk PFAS Risk Level

PFAS above EPA limits detected

1 compound exceed EPA Maximum Contaminant Levels in water serving this ZIP code. Standard pitcher filters like Brita do not remove PFAS. See filter recommendations below.

38
PFAS Detected
1
Above EPA Limits
8
Water Systems
103%
Highest % of MCL

Compounds Exceeding EPA Limits

PFOA Exceeds EPA limit
0 ppt MCL: 4 ppt 103% of limit
Detected: 4.10 ppt

What this means for you

One or more PFAS compounds were measured above the EPA's enforceable drinking water limit at a utility serving ZIP 77498. The EPA set these limits because long-term exposure at higher concentrations is associated with health effects including immune suppression, thyroid changes, and cancer risk increases. Standard pitcher filters (Brita, PUR) are not certified to remove PFAS. The most reliable at-home options are under-sink reverse osmosis systems or activated carbon block filters with an NSF/ANSI 58 certification specifically listing PFOA/PFOS reduction. Your water utility is required to bring levels into compliance by 2029 — filtering at the tap is the practical interim step if you'd like additional protection now.

CITY OF SUGAR LAND

TX0790005 High Risk
Water Type
MX
PFAS Detected
9
Above MCL
1
State
Texas
Data Period
2023–2025

PFAS Test Results

CompoundDetectedvs. EPA LimitEPA LimitStatus
PFOA
Perfluorooctanoic acid
4.10ppt
103% of limit
4 ppt⚠ Exceeds MCL
lithium
32200.00pptNo federal limitUnregulated
6:2 FTS
6:2 Fluorotelomer sulfonic acid
672.00pptNo federal limitUnregulated
PFPeA
Perfluoropentanoic acid
358.00pptNo federal limitUnregulated
PFBA
Perfluorobutanoic acid
74.80pptNo federal limitUnregulated
PFHxA
Perfluorohexanoic acid
12.90pptNo federal limitUnregulated
PFBS
Perfluorobutane sulfonic acid
5.80pptNo federal limitUnregulated
PFHpA
Perfluoroheptanoic acid
3.60pptNo federal limitUnregulated
Show 1 more compound detected at low levels
ADONA4,8-Dioxa-3H-perfluorononanoic acid3.40 pptNo federal limit

FORT BEND COUNTY MUD 2

TX0790038 Low Level
Water Type
Surface Water
PFAS Detected
4
Above MCL
0
State
Texas
Data Period
2023–2025

PFAS Test Results

CompoundDetectedvs. EPA LimitEPA LimitStatus
lithium
9060.00pptNo federal limitUnregulated
6:2 FTS
6:2 Fluorotelomer sulfonic acid
7.50pptNo federal limitUnregulated
PFBA
Perfluorobutanoic acid
6.00pptNo federal limitUnregulated
PFPeA
Perfluoropentanoic acid
3.00pptNo federal limitUnregulated

FORT BEND COUNTY MUD 25

TX0790130 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
26900.00pptNo federal limitUnregulated

FORT BEND COUNTY MUD 30

TX0790146 Low Level
Water Type
Surface Water
PFAS Detected
4
Above MCL
0
State
Texas
Data Period
2023–2025

PFAS Test Results

CompoundDetectedvs. EPA LimitEPA LimitStatus
lithium
22500.00pptNo federal limitUnregulated
PFBA
Perfluorobutanoic acid
7.10pptNo federal limitUnregulated
PFPeA
Perfluoropentanoic acid
4.70pptNo federal limitUnregulated
PFHxA
Perfluorohexanoic acid
4.30pptNo federal limitUnregulated

KINGSBRIDGE MUD

TX0790158 Moderate
Water Type
Surface Water
PFAS Detected
5
Above MCL
0
State
Texas
Data Period
2023–2025

PFAS Test Results

CompoundDetectedvs. EPA LimitEPA LimitStatus
lithium
19000.00pptNo federal limitUnregulated
PFBA
Perfluorobutanoic acid
7.80pptNo federal limitUnregulated
PFHxA
Perfluorohexanoic acid
7.20pptNo federal limitUnregulated
PFPeA
Perfluoropentanoic acid
6.40pptNo federal limitUnregulated
PFBS
Perfluorobutane sulfonic acid
3.20pptNo federal limitUnregulated

FORT BEND COUNTY MUD 41

TX0790229 Moderate
Water Type
Surface Water
PFAS Detected
8
Above MCL
0
State
Texas
Data Period
2023–2025

PFAS Test Results

CompoundDetectedvs. EPA LimitEPA LimitStatus
PFOS
Perfluorooctane sulfonic acid
4.00ppt
100% of limit
4 pptBelow limit
PFHxS
Perfluorohexane sulfonic acid
4.00ppt
40% of limit
10 pptBelow limit
lithium
14900.00pptNo federal limitUnregulated
6:2 FTS
6:2 Fluorotelomer sulfonic acid
62.70pptNo federal limitUnregulated
PFHxA
Perfluorohexanoic acid
9.30pptNo federal limitUnregulated
PFPeA
Perfluoropentanoic acid
9.10pptNo federal limitUnregulated
PFBA
Perfluorobutanoic acid
8.20pptNo federal limitUnregulated
PFBS
Perfluorobutane sulfonic acid
4.50pptNo federal limitUnregulated

FORT BEND COUNTY MUD 119

TX0790382 Low Level
Water Type
Surface Water
PFAS Detected
2
Above MCL
0
State
Texas
Data Period
2023–2025

PFAS Test Results

CompoundDetectedvs. EPA LimitEPA LimitStatus
lithium
17800.00pptNo federal limitUnregulated
PFPeA
Perfluoropentanoic acid
3.00pptNo federal limitUnregulated

CITY OF HOUSTON, TX

TX1010013 Moderate
Water Type
Groundwater
PFAS Detected
5
Above MCL
0
State
Texas
Data Period
2023–2025

PFAS Test Results

CompoundDetectedvs. EPA LimitEPA LimitStatus
lithium
33900.00pptNo federal limitUnregulated
6:2 FTS
6:2 Fluorotelomer sulfonic acid
42.60pptNo federal limitUnregulated
PFBA
Perfluorobutanoic acid
10.60pptNo federal limitUnregulated
PFPeA
Perfluoropentanoic acid
6.70pptNo federal limitUnregulated
PFHxA
Perfluorohexanoic acid
5.10pptNo federal limitUnregulated
Note: ZIP code 77498 is served by 8 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)
TX0790005, TX0790038, TX0790130, TX0790146, TX0790158, TX0790229, TX0790382, TX1010013
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.