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States → Texas

CHIMNEY HILL MUD

PWS ID: TX1010910 · HOUSTON, Texas 77046-0905

PFAS Detected

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

Population Served
5,409
Total Violations
12
Health-Based Violations
2
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
1,806
County
Harris
School/Daycare
No
MCL Violations
2
Monitoring Violations
5
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 3 2009
Lead and Copper Rule MR 2 2013
Groundwater Rule Other 2 2011
Gross Alpha, Excl. Radon and U MCL 1 1984
Combined Radium (-226 and -228) MCL 1 1984
Public Notice Other 1 2009

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 5 of 90 samples detected PFAS.

Contaminant Date Result MRL Status
PFUnA 7/2/2025 <0.002 µg/L 0.002 µg/L Not Detected
ADONA 7/2/2025 <0.003 µg/L 0.003 µg/L Not Detected
9Cl-PF3ONS 7/2/2025 <0.002 µg/L 0.002 µg/L Not Detected
11Cl-PF3OUdS 7/2/2025 <0.005 µg/L 0.005 µg/L Not Detected
HFPO-DA 7/2/2025 <0.005 µg/L 0.005 µg/L Not Detected
NMeFOSAA 7/2/2025 <0.006 µg/L 0.006 µg/L Not Detected
NEtFOSAA 7/2/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFDA 7/2/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFBA 7/2/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFEESA 7/2/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFTA 7/2/2025 <0.008 µg/L 0.008 µg/L Not Detected
PFPeS 7/2/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFDoA 7/2/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFHpA 7/2/2025 <0.003 µg/L 0.003 µg/L Not Detected
NFDHA 7/2/2025 <0.02 µg/L 0.02 µg/L Not Detected
lithium 7/2/2025 17.9000 µg/L 9 µg/L Detected
PFHpS 7/2/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFOA 7/2/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFOS 7/2/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFPeA 7/2/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFHxS 7/2/2025 <0.003 µg/L 0.003 µg/L Not Detected
6:2 FTS 7/2/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFBS 7/2/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFTrDA 7/2/2025 <0.007 µg/L 0.007 µg/L Not Detected
PFMBA 7/2/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFMPA 7/2/2025 <0.004 µg/L 0.004 µg/L Not Detected
8:2 FTS 7/2/2025 <0.005 µg/L 0.005 µg/L Not Detected
4:2 FTS 7/2/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFNA 7/2/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFHxA 7/2/2025 <0.003 µg/L 0.003 µg/L Not Detected
11Cl-PF3OUdS 5/21/2025 <0.005 µg/L 0.005 µg/L Not Detected
9Cl-PF3ONS 5/21/2025 <0.002 µg/L 0.002 µg/L Not Detected
ADONA 5/21/2025 <0.003 µg/L 0.003 µg/L Not Detected
HFPO-DA 5/21/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFBA 5/21/2025 <0.005 µg/L 0.005 µg/L Not Detected
8:2 FTS 5/21/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFMPA 5/21/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFEESA 5/21/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 5/21/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFPeS 5/21/2025 <0.004 µg/L 0.004 µg/L Not Detected
lithium 5/21/2025 16.8000 µg/L 9 µg/L Detected
NMeFOSAA 5/21/2025 <0.006 µg/L 0.006 µg/L Not Detected
NEtFOSAA 5/21/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFTrDA 5/21/2025 <0.007 µg/L 0.007 µg/L Not Detected
PFTA 5/21/2025 <0.008 µg/L 0.008 µg/L Not Detected
PFHpS 5/21/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFPeA 5/21/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFNA 5/21/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFUnA 5/21/2025 <0.002 µg/L 0.002 µg/L Not Detected
NFDHA 5/21/2025 <0.02 µg/L 0.02 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.