CheckPFAS

ZIP 77084 · Texas

Houston, TX

High Risk
See the full Houston overview — all utilities & ZIP codes →

9 compounds detected

Above EPA drinking water limits

PFOS Exceeds limit
9.70 ppt (243% of MCL)
→ 2.4× MCL
0 MCL: 4 ppt 9.7 ppt
PFHxS Exceeds limit
15.30 ppt (153% of MCL)
→ 1.5× MCL
0 MCL: 10 ppt 15.3 ppt
lithium no federal limit
37700.00 ppt
0 56550 ppt
6:2 FTS no federal limit
42.60 ppt
0 63.9 ppt
PFBA no federal limit
27.20 ppt
0 40.8 ppt
PFHxA no federal limit
10.70 ppt
0 16.1 ppt
PFPeA no federal limit
9.20 ppt
0 13.8 ppt
PFHpA no federal limit
4.80 ppt
0 7.2 ppt
PFBS no federal limit
4.60 ppt
0 6.9 ppt
Above EPA limit Below EPA limit No federal limit EPA MCL

Above EPA Limits

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

PFAS Detected
67
Above EPA Limits
2
Water Systems
15
Highest % of MCL
243%

Plain English

01What this means for you

One or more PFAS compounds were measured above the EPA's enforceable drinking water limit at a utility serving ZIP 77084. 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.

See PFAS-certified filter picks → Read your utility's Consumer Confidence Report →

What to do next

02Three concrete steps

  1. 01

    Install a certified filter

    A reverse osmosis or NSF/ANSI 58-certified carbon block at your kitchen tap is the most reliable solution. Standard pitcher filters (Brita, PUR) don't remove PFAS unless explicitly certified for it. See certified filter picks →

  2. 02

    Read your utility's CCR

    Your water utility publishes an annual Consumer Confidence Report covering the previous year's water quality, including their PFAS treatment plan if any. More detailed than this site's summary. How to read a CCR →

  3. 03

    Reduce other exposure routes

    Water isn't the only input. Replace badly-scratched non-stick pans, skip microwave popcorn bags and greaseproof fast-food wrappers, and choose stainless or cast iron cookware. Full action plan on the FAQ →

Filter Recommendations

Find the right filter for your water
See our tested & reviewed PFAS-certified filters, ranked by CheckPFAS Score

CheckPFAS earns a small commission on filter purchases at no cost to you. Ranked by performance, not commission. Affiliate disclosure.

02CITY OF HOUSTON, TX

Moderate

PWSID · TX1010013

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 limit—Unregulated
6:2 FTS
6:2 Fluorotelomer sulfonic acid
42.60pptNo federal limit—Unregulated
PFBA
Perfluorobutanoic acid
10.60pptNo federal limit—Unregulated
PFPeA
Perfluoropentanoic acid
6.70pptNo federal limit—Unregulated
PFHxA
Perfluorohexanoic acid
5.10pptNo federal limit—Unregulated

03NORTHAMPTON MUD

Low Level

PWSID · TX1010337

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

PFAS test results

CompoundDetectedvs. EPA LimitEPA LimitStatus
lithium
37700.00pptNo federal limit—Unregulated

04HARRIS COUNTY UTILITY DISTRICT 6

Low Level

PWSID · TX1010501

Water Type
Surface Water
PFAS Detected
3
Above MCL
0
State
Texas
Data Period
2023–2025

PFAS test results

CompoundDetectedvs. EPA LimitEPA LimitStatus
PFBA
Perfluorobutanoic acid
9.10pptNo federal limit—Unregulated
PFPeA
Perfluoropentanoic acid
5.10pptNo federal limit—Unregulated
PFHxA
Perfluorohexanoic acid
4.70pptNo federal limit—Unregulated

05HARRIS COUNTY MUD 102

Moderate

PWSID · TX1010503

Water Type
MX
PFAS Detected
6
Above MCL
0
State
Texas
Data Period
2023–2025

PFAS test results

CompoundDetectedvs. EPA LimitEPA LimitStatus
PFHxS
Perfluorohexane sulfonic acid
3.60ppt
36% of limit
10 pptBelow limit
lithium
26700.00pptNo federal limit—Unregulated
PFHxA
Perfluorohexanoic acid
9.20pptNo federal limit—Unregulated
PFBA
Perfluorobutanoic acid
8.60pptNo federal limit—Unregulated
PFPeA
Perfluoropentanoic acid
8.50pptNo federal limit—Unregulated
PFBS
Perfluorobutane sulfonic acid
4.60pptNo federal limit—Unregulated

06JACKRABBIT ROAD PUD

Moderate

PWSID · TX1010538

Water Type
Surface Water
PFAS Detected
6
Above MCL
0
State
Texas
Data Period
2023–2025

PFAS test results

CompoundDetectedvs. EPA LimitEPA LimitStatus
PFHxS
Perfluorohexane sulfonic acid
3.40ppt
34% of limit
10 pptBelow limit
lithium
20000.00pptNo federal limit—Unregulated
PFPeA
Perfluoropentanoic acid
8.10pptNo federal limit—Unregulated
PFBA
Perfluorobutanoic acid
7.10pptNo federal limit—Unregulated
PFHxA
Perfluorohexanoic acid
4.60pptNo federal limit—Unregulated
PFBS
Perfluorobutane sulfonic acid
4.00pptNo federal limit—Unregulated

07WESTLAKE MUD 1

Low Level

PWSID · TX1010635

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

PFAS test results

CompoundDetectedvs. EPA LimitEPA LimitStatus
lithium
37300.00pptNo federal limit—Unregulated

08SPENCER ROAD PUD

High Risk

PWSID · TX1010654

Water Type
Surface Water
PFAS Detected
8
Above MCL
2
State
Texas
Data Period
2023–2025

PFAS test results

CompoundDetectedvs. EPA LimitEPA LimitStatus
PFOS
Perfluorooctane sulfonic acid
9.70ppt
243% of limit
4 pptExceeds MCL
PFHxS
Perfluorohexane sulfonic acid
15.30ppt
153% of limit
10 pptExceeds MCL
lithium
18800.00pptNo federal limit—Unregulated
PFBA
Perfluorobutanoic acid
27.20pptNo federal limit—Unregulated
PFHxA
Perfluorohexanoic acid
10.70pptNo federal limit—Unregulated
PFPeA
Perfluoropentanoic acid
9.20pptNo federal limit—Unregulated
PFHpA
Perfluoroheptanoic acid
4.80pptNo federal limit—Unregulated
PFBS
Perfluorobutane sulfonic acid
4.20pptNo federal limit—Unregulated

09ADDICKS UTILITY DISTRICT

Moderate

PWSID · TX1011019

Water Type
Surface Water
PFAS Detected
6
Above MCL
0
State
Texas
Data Period
2023–2025

PFAS test results

CompoundDetectedvs. EPA LimitEPA LimitStatus
PFHxS
Perfluorohexane sulfonic acid
3.30ppt
33% of limit
10 pptBelow limit
lithium
11200.00pptNo federal limit—Unregulated
PFBA
Perfluorobutanoic acid
7.40pptNo federal limit—Unregulated
PFPeA
Perfluoropentanoic acid
6.80pptNo federal limit—Unregulated
PFHxA
Perfluorohexanoic acid
6.40pptNo federal limit—Unregulated
PFBS
Perfluorobutane sulfonic acid
3.70pptNo federal limit—Unregulated

010LANGHAM CREEK UTILITY DISTRICT

Moderate

PWSID · TX1011249

Water Type
MX
PFAS Detected
6
Above MCL
0
State
Texas
Data Period
2023–2025

PFAS test results

CompoundDetectedvs. EPA LimitEPA LimitStatus
PFHxS
Perfluorohexane sulfonic acid
3.30ppt
33% of limit
10 pptBelow limit
lithium
33100.00pptNo federal limit—Unregulated
PFBA
Perfluorobutanoic acid
9.10pptNo federal limit—Unregulated
PFPeA
Perfluoropentanoic acid
7.40pptNo federal limit—Unregulated
PFHxA
Perfluorohexanoic acid
6.30pptNo federal limit—Unregulated
PFBS
Perfluorobutane sulfonic acid
3.70pptNo federal limit—Unregulated

011BARKER CYPRESS MUD

Moderate

PWSID · TX1011613

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

PFAS test results

CompoundDetectedvs. EPA LimitEPA LimitStatus
lithium
11100.00pptNo federal limit—Unregulated
PFBA
Perfluorobutanoic acid
6.80pptNo federal limit—Unregulated
PFPeA
Perfluoropentanoic acid
5.40pptNo federal limit—Unregulated
PFHxA
Perfluorohexanoic acid
4.70pptNo federal limit—Unregulated
PFBS
Perfluorobutane sulfonic acid
3.00pptNo federal limit—Unregulated

012KATY ISD MAYDE CREEK SCHOOL COMPLEX

Low Level

PWSID · TX1011728

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

PFAS test results

CompoundDetectedvs. EPA LimitEPA LimitStatus
lithium
20500.00pptNo federal limit—Unregulated

013HARRIS COUNTY MUD 183

Moderate

PWSID · TX1011824

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

PFAS test results

CompoundDetectedvs. EPA LimitEPA LimitStatus
PFHxS
Perfluorohexane sulfonic acid
3.10ppt
31% of limit
10 pptBelow limit
lithium
14200.00pptNo federal limit—Unregulated
PFBA
Perfluorobutanoic acid
6.60pptNo federal limit—Unregulated
PFPeA
Perfluoropentanoic acid
6.50pptNo federal limit—Unregulated
PFHxA
Perfluorohexanoic acid
4.90pptNo federal limit—Unregulated

014HARRIS COUNTY MUD 185

Moderate

PWSID · TX1011914

Water Type
Surface Water
PFAS Detected
7
Above MCL
0
State
Texas
Data Period
2023–2025

PFAS test results

CompoundDetectedvs. EPA LimitEPA LimitStatus
PFHxS
Perfluorohexane sulfonic acid
3.40ppt
34% of limit
10 pptBelow limit
lithium
11100.00pptNo federal limit—Unregulated
6:2 FTS
6:2 Fluorotelomer sulfonic acid
13.10pptNo federal limit—Unregulated
PFHxA
Perfluorohexanoic acid
9.60pptNo federal limit—Unregulated
PFPeA
Perfluoropentanoic acid
8.20pptNo federal limit—Unregulated
PFBA
Perfluorobutanoic acid
7.10pptNo federal limit—Unregulated
PFBS
Perfluorobutane sulfonic acid
4.30pptNo federal limit—Unregulated

015HARRIS COUNTY MUD 238

Low Level

PWSID · TX1012361

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

PFAS test results

CompoundDetectedvs. EPA LimitEPA LimitStatus
lithium
20700.00pptNo federal limit—Unregulated
PFBA
Perfluorobutanoic acid
8.30pptNo federal limit—Unregulated
PFPeA
Perfluoropentanoic acid
5.80pptNo federal limit—Unregulated
PFHxA
Perfluorohexanoic acid
4.80pptNo federal limit—Unregulated

016HARRIS COUNTY MUD 276

Low Level

PWSID · TX1012942

Water Type
Surface Water
PFAS Detected
3
Above MCL
0
State
Texas
Data Period
2023–2025

PFAS test results

CompoundDetectedvs. EPA LimitEPA LimitStatus
PFBA
Perfluorobutanoic acid
7.00pptNo federal limit—Unregulated
PFPeA
Perfluoropentanoic acid
5.20pptNo federal limit—Unregulated
PFHxA
Perfluorohexanoic acid
4.90pptNo federal limit—Unregulated

Note: ZIP code 77084 is served by 15 separate water utilities. Results above show data for each system independently.

Source & Methodology

About this data

Source
EPA UCMR 5
Data released
January 2026
Sampling period
January 2023 – December 2025
Systems tested
~10,000 public water systems
Water systems (PWSID)
TX1010013 · TX1010337 · TX1010501 · TX1010503 · TX1010538 · TX1010635 · TX1010654 · TX1011019 · TX1011249 · TX1011613 · TX1011728 · TX1011824 · TX1011914 · TX1012361 · TX1012942
Detection threshold (MRL)
~1.5–2 ppt

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. "Not detected" means below the MRL, not literally zero.

View raw EPA UCMR 5 occurrence data →

Related

More resources for your area

  1. 01

    How to read your utility's CCR

    Decode your annual Consumer Confidence Report

    →
  2. 02

    On a private well?

    PFAS testing guide for well owners — EPA rules don't apply

    →
  3. 03

    All water systems in Texas

    Compare utilities statewide

    →
  4. 04

    Which filter removes PFAS?

    Compare every method by removal rate & NSF certification

    →
  5. 05

    PFAS health effects

    What the science shows, condition by condition

    →
  6. 06

    PFAS compound guide

    Health effects & EPA limits for each compound

    →