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HARRIS COUNTY WCID 116

PWS ID: TX1010507 · HOUSTON, Texas 77019-7120

PFAS Detected

4 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.

Population Served
3,627
Total Violations
23
Health-Based Violations
3
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
1,209
County
Harris
School/Daycare
No
MCL Violations
3
Monitoring Violations
13
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Lead and Copper Rule MR 13 2022
Consumer Confidence Rule Other 4 2010
Arsenic MCL 3 2009

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 4 of 60 samples detected PFAS.

Contaminant Date Result MRL Status
ADONA 8/9/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFBS 8/9/2023 0.0031 µg/L 0.003 µg/L Detected
PFHpA 8/9/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFHxS 8/9/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFNA 8/9/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFOS 8/9/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFTA 8/9/2023 <0.008 µg/L 0.008 µg/L Not Detected
PFDA 8/9/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFHxA 8/9/2023 0.0050 µg/L 0.003 µg/L Detected
PFUnA 8/9/2023 <0.002 µg/L 0.002 µg/L Not Detected
lithium 8/9/2023 <9 µg/L 9 µg/L Not Detected
9Cl-PF3ONS 8/9/2023 <0.002 µg/L 0.002 µg/L Not Detected
PFOA 8/9/2023 <0.004 µg/L 0.004 µg/L Not Detected
HFPO-DA 8/9/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFBA 8/9/2023 0.0094 µg/L 0.005 µg/L Detected
6:2 FTS 8/9/2023 <0.005 µg/L 0.005 µg/L Not Detected
4:2 FTS 8/9/2023 <0.003 µg/L 0.003 µg/L Not Detected
8:2 FTS 8/9/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFMPA 8/9/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFPeA 8/9/2023 0.0065 µg/L 0.003 µg/L Detected
PFMBA 8/9/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFEESA 8/9/2023 <0.003 µg/L 0.003 µg/L Not Detected
NFDHA 8/9/2023 <0.02 µg/L 0.02 µg/L Not Detected
PFPeS 8/9/2023 <0.004 µg/L 0.004 µg/L Not Detected
11Cl-PF3OUdS 8/9/2023 <0.005 µg/L 0.005 µg/L Not Detected
NMeFOSAA 8/9/2023 <0.006 µg/L 0.006 µg/L Not Detected
PFTrDA 8/9/2023 <0.007 µg/L 0.007 µg/L Not Detected
NEtFOSAA 8/9/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFHpS 8/9/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 8/9/2023 <0.003 µg/L 0.003 µg/L Not Detected
ADONA 2/20/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFHxA 2/20/2023 <0.003 µg/L 0.003 µg/L Not Detected
11Cl-PF3OUdS 2/20/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFUnA 2/20/2023 <0.002 µg/L 0.002 µg/L Not Detected
PFDoA 2/20/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFDA 2/20/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFOA 2/20/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFOS 2/20/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFNA 2/20/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFHpA 2/20/2023 <0.003 µg/L 0.003 µg/L Not Detected
HFPO-DA 2/20/2023 <0.005 µg/L 0.005 µg/L Not Detected
NMeFOSAA 2/20/2023 <0.006 µg/L 0.006 µg/L Not Detected
PFHxS 2/20/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFEESA 2/20/2023 <0.003 µg/L 0.003 µg/L Not Detected
lithium 2/20/2023 <9 µg/L 9 µg/L Not Detected
NEtFOSAA 2/20/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFBS 2/20/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFTA 2/20/2023 <0.008 µg/L 0.008 µg/L Not Detected
PFHpS 2/20/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFTrDA 2/20/2023 <0.007 µg/L 0.007 µg/L Not Detected
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. PFAS data from EPA UCMR5 monitoring program (2023-2025). This data is provided for informational purposes only.