PlainWater
States → Louisiana

TOWN OF MAMOU WATER SYSTEM

PWS ID: LA1039005 · MAMOU, Louisiana 70554

PFAS Detected

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

Population Served
4,559
Total Violations
247
Health-Based Violations
207
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
1,660
County
Evangeline Parish
School/Daycare
No
MCL Violations
207
Monitoring Violations
15
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
TTHM MCL 130 2022
Total Haloacetic Acids (HAA5) MCL 74 2023
Public Notice Other 8 2022
Lead and Copper Rule MR 7 2020
Consumer Confidence Rule Other 5 2021
Coliform (TCR) MR 4 2012
TTHM MR 4 2016
Fluoride MCL 3 1982

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 2 of 60 samples detected PFAS.

Contaminant Date Result MRL Status
8:2 FTS 9/26/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFBA 9/26/2023 <0.005 µg/L 0.005 µg/L Not Detected
HFPO-DA 9/26/2023 <0.005 µg/L 0.005 µg/L Not Detected
ADONA 9/26/2023 <0.003 µg/L 0.003 µg/L Not Detected
NEtFOSAA 9/26/2023 <0.005 µg/L 0.005 µg/L Not Detected
9Cl-PF3ONS 9/26/2023 <0.002 µg/L 0.002 µg/L Not Detected
PFTrDA 9/26/2023 <0.007 µg/L 0.007 µg/L Not Detected
NMeFOSAA 9/26/2023 <0.006 µg/L 0.006 µg/L Not Detected
PFHpA 9/26/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFMPA 9/26/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFTA 9/26/2023 <0.008 µg/L 0.008 µg/L Not Detected
PFHxA 9/26/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFUnA 9/26/2023 <0.002 µg/L 0.002 µg/L Not Detected
11Cl-PF3OUdS 9/26/2023 <0.005 µg/L 0.005 µg/L Not Detected
4:2 FTS 9/26/2023 <0.003 µg/L 0.003 µg/L Not Detected
lithium 9/26/2023 18.6000 µg/L 9 µg/L Detected
PFBS 9/26/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFHxS 9/26/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFNA 9/26/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFOS 9/26/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFOA 9/26/2023 <0.004 µg/L 0.004 µg/L Not Detected
6:2 FTS 9/26/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFDoA 9/26/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFHpS 9/26/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFPeS 9/26/2023 <0.004 µg/L 0.004 µg/L Not Detected
NFDHA 9/26/2023 <0.02 µg/L 0.02 µg/L Not Detected
PFEESA 9/26/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 9/26/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFPeA 9/26/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFDA 9/26/2023 <0.003 µg/L 0.003 µg/L Not Detected
6:2 FTS 4/10/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFHxA 4/10/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFPeS 4/10/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFHpS 4/10/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFTA 4/10/2024 <0.008 µg/L 0.008 µg/L Not Detected
PFDoA 4/10/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFDA 4/10/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFOA 4/10/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFOS 4/10/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFNA 4/10/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFHxS 4/10/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHpA 4/10/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFBS 4/10/2024 <0.003 µg/L 0.003 µg/L Not Detected
NMeFOSAA 4/10/2024 <0.006 µg/L 0.006 µg/L Not Detected
NEtFOSAA 4/10/2024 <0.005 µg/L 0.005 µg/L Not Detected
8:2 FTS 4/10/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFTrDA 4/10/2024 <0.007 µg/L 0.007 µg/L Not Detected
HFPO-DA 4/10/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFEESA 4/10/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 4/10/2024 <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.