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MONTGOMERY COUNTY MUD 36

PWS ID: TX1700139 · THE WOODLANDS, Texas 77380-1025

PFAS Detected

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

Population Served
5,235
Total Violations
16
Health-Based Violations
1
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
1,745
County
Montgomery
School/Daycare
No
MCL Violations
1
Monitoring Violations
8
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 3 1992
Chlorine MR 3 2019
Lead and Copper Rule MR 2 2013
Consumer Confidence Rule Other 2 2014
Public Notice Other 1 2020
Coliform (TCR) MCL 1 1993
Coliform (TCR) Other 1 1992

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 4 of 87 samples detected PFAS.

Contaminant Date Result MRL Status
lithium 8/22/2025 11.6000 µg/L 9 µg/L Detected
PFOS 8/22/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFEESA 8/22/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFNA 8/22/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFHxS 8/22/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFHpA 8/22/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFBS 8/22/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFMPA 8/22/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFUnA 8/22/2025 <0.002 µg/L 0.002 µg/L Not Detected
6:2 FTS 8/22/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFBA 8/22/2025 <0.005 µg/L 0.005 µg/L Not Detected
HFPO-DA 8/22/2025 <0.005 µg/L 0.005 µg/L Not Detected
ADONA 8/22/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFPeA 8/22/2025 <0.003 µg/L 0.003 µg/L Not Detected
8:2 FTS 8/22/2025 <0.005 µg/L 0.005 µg/L Not Detected
4:2 FTS 8/22/2025 <0.003 µg/L 0.003 µg/L Not Detected
11Cl-PF3OUdS 8/22/2025 <0.005 µg/L 0.005 µg/L Not Detected
9Cl-PF3ONS 8/22/2025 <0.002 µg/L 0.002 µg/L Not Detected
PFHxA 8/22/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 8/22/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFDA 8/22/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFOA 8/22/2025 <0.004 µg/L 0.004 µg/L Not Detected
NFDHA 8/22/2025 <0.02 µg/L 0.02 µg/L Not Detected
PFHpS 8/22/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 8/22/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFPeS 8/22/2025 <0.004 µg/L 0.004 µg/L Not Detected
ADONA 5/15/2025 <0.003 µg/L 0.003 µg/L Not Detected
lithium 5/15/2025 14.2000 µg/L 9 µg/L Detected
HFPO-DA 5/15/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFBA 5/15/2025 <0.005 µg/L 0.005 µg/L Not Detected
6:2 FTS 5/15/2025 <0.005 µg/L 0.005 µg/L Not Detected
8:2 FTS 5/15/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFUnA 5/15/2025 <0.002 µg/L 0.002 µg/L Not Detected
PFMPA 5/15/2025 <0.004 µg/L 0.004 µg/L Not Detected
NEtFOSAA 5/15/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFPeA 5/15/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 5/15/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFEESA 5/15/2025 <0.003 µg/L 0.003 µg/L Not Detected
NFDHA 5/15/2025 <0.02 µg/L 0.02 µg/L Not Detected
PFPeS 5/15/2025 <0.004 µg/L 0.004 µg/L Not Detected
4:2 FTS 5/15/2025 <0.003 µg/L 0.003 µg/L Not Detected
11Cl-PF3OUdS 5/15/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFHxA 5/15/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 5/15/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFDA 5/15/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFOA 5/15/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFOS 5/15/2025 <0.004 µg/L 0.004 µg/L Not Detected
NMeFOSAA 5/15/2025 <0.006 µg/L 0.006 µg/L Not Detected
PFNA 5/15/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFTrDA 5/15/2025 <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.