CheckPFAS

ZIP 75032 · Texas

Rockwall, TX

Low Level
See the full Rockwall overview — all utilities & ZIP codes →

6 compounds detected

Trace detections — well below EPA limits

PFHxS
3.00 ppt (30% of MCL)
0 MCL: 10 ppt 15 ppt
PFBA no federal limit
10.20 ppt
0 15.3 ppt
6:2 FTS no federal limit
8.80 ppt
0 13.2 ppt
PFPeA no federal limit
7.50 ppt
0 11.3 ppt
PFHxA no federal limit
6.70 ppt
0 10.1 ppt
PFBS no federal limit
4.90 ppt
0 7.4 ppt
Above EPA limit Below EPA limit No federal limit EPA MCL
PFAS Detected
18
Above EPA Limits
0
Water Systems
5
Highest % of MCL
30%

Plain English

01What this means for you

Very low PFAS concentrations were detected — well below the EPA's Maximum Contaminant Level. For most healthy adults, this represents a minimal incremental risk from drinking water. The most proportionate response is to note the result and check your utility's Consumer Confidence Report again next year. If you have specific health concerns or vulnerable household members, speaking with your doctor and optionally installing a certified point-of-use filter is a reasonable step.

02HIGH POINT WATER SUPPLY CORPORATION

Low Level

PWSID · TX1290016

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

PFAS test results

CompoundDetectedvs. EPA LimitEPA LimitStatus
PFHxS
Perfluorohexane sulfonic acid
3.00ppt
30% of limit
10 pptBelow limit
PFBA
Perfluorobutanoic acid
9.30pptNo federal limitUnregulated

03CITY OF ROCKWALL

Low Level

PWSID · TX1990001

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

PFAS test results

CompoundDetectedvs. EPA LimitEPA LimitStatus
PFBA
Perfluorobutanoic acid
9.60pptNo federal limitUnregulated
PFPeA
Perfluoropentanoic acid
7.00pptNo federal limitUnregulated
PFHxA
Perfluorohexanoic acid
6.30pptNo federal limitUnregulated
PFBS
Perfluorobutane sulfonic acid
4.40pptNo federal limitUnregulated

04BLACKLAND WSC

Low Level

PWSID · TX1990004

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

PFAS test results

CompoundDetectedvs. EPA LimitEPA LimitStatus
PFBA
Perfluorobutanoic acid
10.20pptNo federal limitUnregulated
PFPeA
Perfluoropentanoic acid
6.20pptNo federal limitUnregulated
PFHxA
Perfluorohexanoic acid
5.30pptNo federal limitUnregulated
PFBS
Perfluorobutane sulfonic acid
3.80pptNo federal limitUnregulated

05R C H WSC

Low Level

PWSID · TX1990012

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

PFAS test results

CompoundDetectedvs. EPA LimitEPA LimitStatus
PFBA
Perfluorobutanoic acid
9.00pptNo federal limitUnregulated
PFPeA
Perfluoropentanoic acid
7.50pptNo federal limitUnregulated
PFHxA
Perfluorohexanoic acid
6.70pptNo federal limitUnregulated
PFBS
Perfluorobutane sulfonic acid
4.90pptNo federal limitUnregulated

06CITY OF HEATH

Low Level

PWSID · TX1990014

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

PFAS test results

CompoundDetectedvs. EPA LimitEPA LimitStatus
6:2 FTS
6:2 Fluorotelomer sulfonic acid
8.80pptNo federal limitUnregulated
PFPeA
Perfluoropentanoic acid
5.90pptNo federal limitUnregulated
PFHxA
Perfluorohexanoic acid
5.50pptNo federal limitUnregulated
PFBS
Perfluorobutane sulfonic acid
3.50pptNo federal limitUnregulated

Note: ZIP code 75032 is served by 5 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)
TX1290016 · TX1990001 · TX1990004 · TX1990012 · TX1990014
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 →

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