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States → Louisiana

CALCASIEU PARISH WW DISTRICT NO 1

PWS ID: LA1019051 · LAKE CHARLES, Louisiana 70612

PFAS Detected

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

Population Served
20,837
Total Violations
30
Health-Based Violations
9
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
8,810
County
Calcasieu Parish
School/Daycare
No
MCL Violations
9
Monitoring Violations
20
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
TTHM MR 10 2011
Total Haloacetic Acids (HAA5) MR 10 2011
Coliform (TCR) MCL 9 2010

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 4 of 120 samples detected PFAS.

Contaminant Date Result MRL Status
PFMPA 4/1/2025 <0.004 µg/L 0.004 µg/L Not Detected
ADONA 4/1/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFHpA 4/1/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFHxS 4/1/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFNA 4/1/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFOS 4/1/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFOA 4/1/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFBS 4/1/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFEESA 4/1/2025 <0.003 µg/L 0.003 µg/L Not Detected
NFDHA 4/1/2025 <0.02 µg/L 0.02 µg/L Not Detected
PFPeS 4/1/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFHpS 4/1/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFTA 4/1/2025 <0.008 µg/L 0.008 µg/L Not Detected
lithium 4/1/2025 17.2000 µg/L 9 µg/L Detected
NEtFOSAA 4/1/2025 <0.005 µg/L 0.005 µg/L Not Detected
9Cl-PF3ONS 4/1/2025 <0.002 µg/L 0.002 µg/L Not Detected
11Cl-PF3OUdS 4/1/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFBA 4/1/2025 <0.005 µg/L 0.005 µg/L Not Detected
6:2 FTS 4/1/2025 <0.005 µg/L 0.005 µg/L Not Detected
4:2 FTS 4/1/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFDA 4/1/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 4/1/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFHxA 4/1/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFUnA 4/1/2025 <0.002 µg/L 0.002 µg/L Not Detected
8:2 FTS 4/1/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFPeA 4/1/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 4/1/2025 <0.003 µg/L 0.003 µg/L Not Detected
NMeFOSAA 4/1/2025 <0.006 µg/L 0.006 µg/L Not Detected
PFTrDA 4/1/2025 <0.007 µg/L 0.007 µg/L Not Detected
HFPO-DA 4/1/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFOA 4/1/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFMBA 4/1/2025 <0.003 µg/L 0.003 µg/L Not Detected
lithium 4/1/2025 18.4000 µg/L 9 µg/L Detected
PFDoA 4/1/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFHxA 4/1/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFUnA 4/1/2025 <0.002 µg/L 0.002 µg/L Not Detected
11Cl-PF3OUdS 4/1/2025 <0.005 µg/L 0.005 µg/L Not Detected
9Cl-PF3ONS 4/1/2025 <0.002 µg/L 0.002 µg/L Not Detected
ADONA 4/1/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFBA 4/1/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFDA 4/1/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFBS 4/1/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFHpA 4/1/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFHxS 4/1/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFPeS 4/1/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFEESA 4/1/2025 <0.003 µg/L 0.003 µg/L Not Detected
HFPO-DA 4/1/2025 <0.005 µg/L 0.005 µg/L Not Detected
NFDHA 4/1/2025 <0.02 µg/L 0.02 µg/L Not Detected
PFNA 4/1/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFHpS 4/1/2025 <0.003 µg/L 0.003 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.