CheckPFAS

ZIP 77044 · Texas

Houston, TX

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

6 compounds detected

Detected — below EPA limits

lithium no federal limit
33900.00 ppt
0 50850 ppt
6:2 FTS no federal limit
42.60 ppt
0 63.9 ppt
PFBA no federal limit
14.60 ppt
0 21.9 ppt
PFPeA no federal limit
7.70 ppt
0 11.6 ppt
PFHxA no federal limit
6.70 ppt
0 10.1 ppt
PFBS no federal limit
3.10 ppt
0 4.7 ppt
Above EPA limit Below EPA limit No federal limit EPA MCL
PFAS Detected
23
Above EPA Limits
0
Water Systems
7
Highest % of MCL
N/A

Plain English

01What 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.

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 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

03GREENWOOD UTILITY DISTRICT

Low Level

PWSID · TX1010554

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

PFAS test results

CompoundDetectedvs. EPA LimitEPA LimitStatus
lithium
22600.00pptNo federal limitUnregulated
PFBA
Perfluorobutanoic acid
6.50pptNo federal limitUnregulated
PFPeA
Perfluoropentanoic acid
4.80pptNo federal limitUnregulated
PFHxA
Perfluorohexanoic acid
4.30pptNo federal limitUnregulated

04PARKWAY UTILITY DISTRICT

Moderate

PWSID · TX1010750

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
7.60pptNo federal limitUnregulated
PFPeA
Perfluoropentanoic acid
6.70pptNo federal limitUnregulated
PFHxA
Perfluorohexanoic acid
6.00pptNo federal limitUnregulated
PFBS
Perfluorobutane sulfonic acid
3.10pptNo federal limitUnregulated

05HARRIS COUNTY MUD 342

Low Level

PWSID · TX1012973

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

PFAS test results

CompoundDetectedvs. EPA LimitEPA LimitStatus
lithium
17900.00pptNo federal limitUnregulated

06HARRIS COUNTY MUD 361

Low Level

PWSID · TX1013123

Water Type
Groundwater
PFAS Detected
2
Above MCL
0
State
Texas
Data Period
2023–2025

PFAS test results

CompoundDetectedvs. EPA LimitEPA LimitStatus
lithium
16500.00pptNo federal limitUnregulated
PFBA
Perfluorobutanoic acid
14.60pptNo federal limitUnregulated

07HARRIS COUNTY MUD 412

Moderate

PWSID · TX1013354

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

PFAS test results

CompoundDetectedvs. EPA LimitEPA LimitStatus
lithium
20000.00pptNo federal limitUnregulated
PFPeA
Perfluoropentanoic acid
7.70pptNo federal limitUnregulated
PFBA
Perfluorobutanoic acid
7.10pptNo federal limitUnregulated
PFHxA
Perfluorohexanoic acid
6.70pptNo federal limitUnregulated
PFBS
Perfluorobutane sulfonic acid
3.00pptNo federal limitUnregulated

08NORTHEAST HARRIS COUNTY MUD 1 SHELDON RI

Low Level

PWSID · TX1013448

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

PFAS test results

CompoundDetectedvs. EPA LimitEPA LimitStatus
lithium
16100.00pptNo federal limitUnregulated

Note: ZIP code 77044 is served by 7 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 · TX1010554 · TX1010750 · TX1012973 · TX1013123 · TX1013354 · TX1013448
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