CheckPFAS

ZIP 78572 · Texas

ZIP Code 78572

High Risk

9 compounds detected

Above EPA drinking water limits

PFOS Exceeds limit
6.80 ppt (170% of MCL)
→ 1.7× MCL
0 MCL: 4 ppt 6.8 ppt
PFOA Exceeds limit
4.30 ppt (108% of MCL)
0 MCL: 4 ppt 6 ppt
PFHxS
6.40 ppt (64% of MCL)
0 MCL: 10 ppt 15 ppt
lithium no federal limit
64400.00 ppt
0 96600 ppt
PFHxA no federal limit
12.50 ppt
0 18.8 ppt
PFPeA no federal limit
12.30 ppt
0 18.5 ppt
PFBA no federal limit
11.90 ppt
0 17.9 ppt
PFHpA no federal limit
4.50 ppt
0 6.8 ppt
PFBS no federal limit
3.00 ppt
0 4.5 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
19
Above EPA Limits
2
Water Systems
4
Highest % of MCL
170%

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 78572. 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.

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 MISSION

Low Level

PWSID · TX1080008

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

PFAS test results

CompoundDetectedvs. EPA LimitEPA LimitStatus
lithium
42900.00pptNo federal limitUnregulated
PFBA
Perfluorobutanoic acid
7.30pptNo federal limitUnregulated

03AGUA SUD

Low Level

PWSID · TX1080022

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

PFAS test results

CompoundDetectedvs. EPA LimitEPA LimitStatus
lithium
64400.00pptNo federal limitUnregulated
PFBA
Perfluorobutanoic acid
11.90pptNo federal limitUnregulated
PFPeA
Perfluoropentanoic acid
4.80pptNo federal limitUnregulated
PFHxA
Perfluorohexanoic acid
4.60pptNo federal limitUnregulated

04SHARYLAND WSC

High Risk

PWSID · TX1080033

Water Type
Surface Water
PFAS Detected
9
Above MCL
2
State
Texas
Data Period
2023–2025

PFAS test results

CompoundDetectedvs. EPA LimitEPA LimitStatus
PFOS
Perfluorooctane sulfonic acid
6.80ppt
170% of limit
4 pptExceeds MCL
PFOA
Perfluorooctanoic acid
4.30ppt
108% of limit
4 pptExceeds MCL
PFHxS
Perfluorohexane sulfonic acid
6.40ppt
64% of limit
10 pptBelow limit
lithium
41300.00pptNo federal limitUnregulated
PFHxA
Perfluorohexanoic acid
12.50pptNo federal limitUnregulated
PFPeA
Perfluoropentanoic acid
12.30pptNo federal limitUnregulated
PFBA
Perfluorobutanoic acid
11.70pptNo federal limitUnregulated
PFHpA
Perfluoroheptanoic acid
4.50pptNo federal limitUnregulated
Show 1 more compound detected at low levels
PFBSPerfluorobutane sulfonic acid3.00 pptNo federal limit

05HIDALGO COUNTY MUD 1

Low Level

PWSID · TX1080088

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

PFAS test results

CompoundDetectedvs. EPA LimitEPA LimitStatus
lithium
59400.00pptNo federal limitUnregulated
PFBA
Perfluorobutanoic acid
6.20pptNo federal limitUnregulated
PFHxA
Perfluorohexanoic acid
4.00pptNo federal limitUnregulated
PFPeA
Perfluoropentanoic acid
4.00pptNo federal limitUnregulated

Note: ZIP code 78572 is served by 4 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)
TX1080008 · TX1080022 · TX1080033 · TX1080088
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

    PFAS compound guide

    Health effects & EPA limits for each compound