PlainWater
States → Louisiana

TOWN OF ARNAUDVILLE WATER SYSTEM

PWS ID: LA1099001 · ARNAUDVILLE, Louisiana 70512

PFAS Detected

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

Population Served
3,957
Total Violations
47
Health-Based Violations
9
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
1,319
County
St. Martin Parish
School/Daycare
No
MCL Violations
7
Monitoring Violations
30
Treatment Tech Violations
2

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
TTHM MR 8 2014
Total Haloacetic Acids (HAA5) MR 8 2014
Coliform (TCR) MCL 7 2003
Chlorine MR 7 2015
Public Notice Other 4 2015
Coliform (TCR) MR 4 2015
Lead and Copper Rule MR 3 2004
Consumer Confidence Rule Other 2 2004
Groundwater Rule TT 2 2011

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 1 of 60 samples detected PFAS.

Contaminant Date Result MRL Status
PFUnA 8/13/2025 <0.002 µg/L 0.002 µg/L Not Detected
PFHpS 8/13/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFBA 8/13/2025 <0.005 µg/L 0.005 µg/L Not Detected
9Cl-PF3ONS 8/13/2025 <0.002 µg/L 0.002 µg/L Not Detected
ADONA 8/13/2025 <0.003 µg/L 0.003 µg/L Not Detected
HFPO-DA 8/13/2025 <0.005 µg/L 0.005 µg/L Not Detected
11Cl-PF3OUdS 8/13/2025 <0.005 µg/L 0.005 µg/L Not Detected
4:2 FTS 8/13/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFMPA 8/13/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFPeA 8/13/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFPeS 8/13/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFHxA 8/13/2025 <0.003 µg/L 0.003 µg/L Not Detected
6:2 FTS 8/13/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFMBA 8/13/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFTrDA 8/13/2025 <0.007 µg/L 0.007 µg/L Not Detected
8:2 FTS 8/13/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFNA 8/13/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFTA 8/13/2025 <0.008 µg/L 0.008 µg/L Not Detected
NEtFOSAA 8/13/2025 <0.005 µg/L 0.005 µg/L Not Detected
NMeFOSAA 8/13/2025 <0.006 µg/L 0.006 µg/L Not Detected
PFHpA 8/13/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFHxS 8/13/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFBS 8/13/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFEESA 8/13/2025 <0.003 µg/L 0.003 µg/L Not Detected
NFDHA 8/13/2025 <0.02 µg/L 0.02 µg/L Not Detected
PFOS 8/13/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFOA 8/13/2025 <0.004 µg/L 0.004 µg/L Not Detected
lithium 8/13/2025 10.5000 µg/L 9 µg/L Detected
PFDoA 8/13/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFDA 8/13/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFBA 2/12/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFMBA 2/12/2025 <0.003 µg/L 0.003 µg/L Not Detected
4:2 FTS 2/12/2025 <0.003 µg/L 0.003 µg/L Not Detected
8:2 FTS 2/12/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFMPA 2/12/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFPeA 2/12/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFEESA 2/12/2025 <0.003 µg/L 0.003 µg/L Not Detected
NFDHA 2/12/2025 <0.02 µg/L 0.02 µg/L Not Detected
PFPeS 2/12/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFHpS 2/12/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFTA 2/12/2025 <0.008 µg/L 0.008 µg/L Not Detected
PFUnA 2/12/2025 <0.002 µg/L 0.002 µg/L Not Detected
PFTrDA 2/12/2025 <0.007 µg/L 0.007 µg/L Not Detected
9Cl-PF3ONS 2/12/2025 <0.002 µg/L 0.002 µg/L Not Detected
NEtFOSAA 2/12/2025 <0.005 µg/L 0.005 µg/L Not Detected
11Cl-PF3OUdS 2/12/2025 <0.005 µg/L 0.005 µg/L Not Detected
ADONA 2/12/2025 <0.003 µg/L 0.003 µg/L Not Detected
HFPO-DA 2/12/2025 <0.005 µg/L 0.005 µg/L Not Detected
lithium 2/12/2025 <9 µg/L 9 µg/L Not Detected
PFBS 2/12/2025 <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.