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States → Texas

SEBASTIAN MUD

PWS ID: TX2450006 · SEBASTIAN, Texas 78594-1002

PFAS Detected

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

Population Served
1,884
Total Violations
106
Health-Based Violations
18
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
769
County
Willacy
School/Daycare
No
MCL Violations
15
Monitoring Violations
72
Treatment Tech Violations
3

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Surface Water Treatment Rule MR 33 2019
Interim Enhanced Surface Water Treatment Rule MR 16 2019
TTHM MCL 10 2004
Public Notice Other 9 2025
Revised Total Coliform Rule MON 8 2020
Total Haloacetic Acids (HAA5) MCL 5 2004
E. COLI MR 4 2009
CARBON, TOTAL MR 4 2024
Lead and Copper Rule MR 4 2015
LEAD AND COPPER RULE REVISIONS TT 3 2024
LEAD AND COPPER RULE REVISIONS RPT 3 2024
Coliform (TCR) MR 3 2007
Surface Water Treatment Rule Other 1 1993

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 39 of 360 samples detected PFAS.

Contaminant Date Result MRL Status
9Cl-PF3ONS 7/24/2024 <0.002 µg/L 0.002 µg/L Not Detected
NFDHA 7/24/2024 <0.02 µg/L 0.02 µg/L Not Detected
PFEESA 7/24/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 7/24/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFPeA 7/24/2024 0.0042 µg/L 0.003 µg/L Detected
PFMPA 7/24/2024 <0.004 µg/L 0.004 µg/L Not Detected
8:2 FTS 7/24/2024 <0.005 µg/L 0.005 µg/L Not Detected
6:2 FTS 7/24/2024 <0.005 µg/L 0.005 µg/L Not Detected
11Cl-PF3OUdS 7/24/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFPeS 7/24/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFOA 7/24/2024 <0.004 µg/L 0.004 µg/L Not Detected
lithium 7/24/2024 50.3000 µg/L 9 µg/L Detected
4:2 FTS 7/24/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHxA 7/24/2024 0.0044 µg/L 0.003 µg/L Detected
PFBA 7/24/2024 0.0078 µg/L 0.005 µg/L Detected
HFPO-DA 7/24/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFTA 7/24/2024 <0.008 µg/L 0.008 µg/L Not Detected
PFTrDA 7/24/2024 <0.007 µg/L 0.007 µg/L Not Detected
NEtFOSAA 7/24/2024 <0.005 µg/L 0.005 µg/L Not Detected
NMeFOSAA 7/24/2024 <0.006 µg/L 0.006 µg/L Not Detected
PFNA 7/24/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFUnA 7/24/2024 <0.002 µg/L 0.002 µg/L Not Detected
PFHpS 7/24/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 7/24/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFDA 7/24/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFOS 7/24/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFHxS 7/24/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHpA 7/24/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFBS 7/24/2024 <0.003 µg/L 0.003 µg/L Not Detected
ADONA 7/24/2024 <0.003 µg/L 0.003 µg/L Not Detected
6:2 FTS 7/24/2024 <0.005 µg/L 0.005 µg/L Not Detected
4:2 FTS 7/24/2024 <0.003 µg/L 0.003 µg/L Not Detected
8:2 FTS 7/24/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFMPA 7/24/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFPeA 7/24/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFEESA 7/24/2024 <0.003 µg/L 0.003 µg/L Not Detected
NFDHA 7/24/2024 <0.02 µg/L 0.02 µg/L Not Detected
PFPeS 7/24/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFHpS 7/24/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 7/24/2024 <0.003 µg/L 0.003 µg/L Not Detected
ADONA 7/24/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 7/24/2024 <0.003 µg/L 0.003 µg/L Not Detected
NEtFOSAA 7/24/2024 <0.005 µg/L 0.005 µg/L Not Detected
lithium 7/24/2024 53.7000 µg/L 9 µg/L Detected
PFBA 7/24/2024 0.0078 µg/L 0.005 µg/L Detected
PFDA 7/24/2024 <0.003 µg/L 0.003 µg/L Not Detected
NMeFOSAA 7/24/2024 <0.006 µg/L 0.006 µg/L Not Detected
PFTrDA 7/24/2024 <0.007 µg/L 0.007 µg/L Not Detected
PFTA 7/24/2024 <0.008 µg/L 0.008 µg/L Not Detected
PFUnA 7/24/2024 <0.002 µg/L 0.002 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.