PlainWater
States → Louisiana

NORTH DESOTO WATER SYSTEM

PWS ID: LA1031011 · STONEWALL, Louisiana 71078

PFAS Detected

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

Population Served
7,608
Total Violations
36
Health-Based Violations
3
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
2,536
County
De Soto Parish
School/Daycare
No
MCL Violations
3
Monitoring Violations
19
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Consumer Confidence Rule Other 5 2024
Public Notice Other 4 2014
Chlorine MR 4 2014
TTHM MR 4 2014
Total Haloacetic Acids (HAA5) MR 4 2014
Lead and Copper Rule MR 4 2010
Coliform (TCR) MCL 3 1993
Coliform (TCR) MR 3 2014

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 6 of 180 samples detected PFAS.

Contaminant Date Result MRL Status
ADONA 4/8/2024 <0.003 µg/L 0.003 µg/L Not Detected
NMeFOSAA 4/8/2024 <0.006 µg/L 0.006 µg/L Not Detected
PFTrDA 4/8/2024 <0.007 µg/L 0.007 µg/L Not Detected
PFBS 4/8/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHpA 4/8/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHxS 4/8/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFNA 4/8/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFOS 4/8/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFOA 4/8/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFDA 4/8/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 4/8/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHxA 4/8/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFUnA 4/8/2024 <0.002 µg/L 0.002 µg/L Not Detected
PFTA 4/8/2024 <0.008 µg/L 0.008 µg/L Not Detected
9Cl-PF3ONS 4/8/2024 <0.002 µg/L 0.002 µg/L Not Detected
PFPeA 4/8/2024 <0.003 µg/L 0.003 µg/L Not Detected
lithium 4/8/2024 23.3000 µg/L 9 µg/L Detected
PFHpS 4/8/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFPeS 4/8/2024 <0.004 µg/L 0.004 µg/L Not Detected
NFDHA 4/8/2024 <0.02 µg/L 0.02 µg/L Not Detected
11Cl-PF3OUdS 4/8/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFMBA 4/8/2024 <0.003 µg/L 0.003 µg/L Not Detected
NEtFOSAA 4/8/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFMPA 4/8/2024 <0.004 µg/L 0.004 µg/L Not Detected
8:2 FTS 4/8/2024 <0.005 µg/L 0.005 µg/L Not Detected
4:2 FTS 4/8/2024 <0.003 µg/L 0.003 µg/L Not Detected
6:2 FTS 4/8/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFBA 4/8/2024 <0.005 µg/L 0.005 µg/L Not Detected
HFPO-DA 4/8/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFEESA 4/8/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 4/8/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFDA 4/8/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 4/8/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHxA 4/8/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFUnA 4/8/2024 <0.002 µg/L 0.002 µg/L Not Detected
11Cl-PF3OUdS 4/8/2024 <0.005 µg/L 0.005 µg/L Not Detected
9Cl-PF3ONS 4/8/2024 <0.002 µg/L 0.002 µg/L Not Detected
ADONA 4/8/2024 <0.003 µg/L 0.003 µg/L Not Detected
HFPO-DA 4/8/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFBA 4/8/2024 <0.005 µg/L 0.005 µg/L Not Detected
6:2 FTS 4/8/2024 <0.005 µg/L 0.005 µg/L Not Detected
4:2 FTS 4/8/2024 <0.003 µg/L 0.003 µg/L Not Detected
8:2 FTS 4/8/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFBS 4/8/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFPeA 4/8/2024 <0.003 µg/L 0.003 µg/L Not Detected
NEtFOSAA 4/8/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFHpA 4/8/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHxS 4/8/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFNA 4/8/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFOS 4/8/2024 <0.004 µg/L 0.004 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.