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States → Louisiana

NATCHITOCHES WATER SYSTEM

PWS ID: LA1069007 · NATCHITOCHES, Louisiana 71457

PFAS Detected

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

Population Served
27,693
Total Violations
88
Health-Based Violations
70
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
9,231
County
Natchitoches Parish
School/Daycare
No
MCL Violations
53
Monitoring Violations
5
Treatment Tech Violations
17

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MCL 27 2014
CARBON, TOTAL TT 17 2008
Total Haloacetic Acids (HAA5) MCL 16 2015
TTHM MCL 6 1984
Revised Total Coliform Rule MCL 4 2018
Interim Enhanced Surface Water Treatment Rule MR 3 2018
Total Haloacetic Acids (HAA5) MR 2 2014
Consumer Confidence Rule Other 2 2014

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 1 of 45 samples detected PFAS.

Contaminant Date Result MRL Status
PFTA 9/19/2023 <0.008 µg/L 0.008 µg/L Not Detected
lithium 9/19/2023 <9 µg/L 9 µg/L Not Detected
NMeFOSAA 9/19/2023 <0.006 µg/L 0.006 µg/L Not Detected
PFTrDA 9/19/2023 <0.007 µg/L 0.007 µg/L Not Detected
NEtFOSAA 9/19/2023 <0.005 µg/L 0.005 µg/L Not Detected
8:2 FTS 8/9/2023 <0.005 µg/L 0.005 µg/L Not Detected
11Cl-PF3OUdS 8/9/2023 <0.005 µg/L 0.005 µg/L Not Detected
ADONA 8/9/2023 <0.003 µg/L 0.003 µg/L Not Detected
HFPO-DA 8/9/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFBA 8/9/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFHpS 8/9/2023 <0.003 µg/L 0.003 µg/L Not Detected
4:2 FTS 8/9/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFUnA 8/9/2023 <0.002 µg/L 0.002 µg/L Not Detected
PFMPA 8/9/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFPeA 8/9/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 8/9/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFEESA 8/9/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFPeS 8/9/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFNA 8/9/2023 <0.004 µg/L 0.004 µg/L Not Detected
6:2 FTS 8/9/2023 <0.005 µg/L 0.005 µg/L Not Detected
NFDHA 8/9/2023 <0.02 µg/L 0.02 µg/L Not Detected
PFOA 8/9/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFBS 8/9/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFHpA 8/9/2023 0.0031 µg/L 0.003 µg/L Detected
PFHxS 8/9/2023 <0.003 µg/L 0.003 µg/L Not Detected
9Cl-PF3ONS 8/9/2023 <0.002 µg/L 0.002 µg/L Not Detected
PFHxA 8/9/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 8/9/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFOS 8/9/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFDA 8/9/2023 <0.003 µg/L 0.003 µg/L Not Detected
NEtFOSAA 6/20/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFTA 6/20/2023 <0.008 µg/L 0.008 µg/L Not Detected
PFTrDA 6/20/2023 <0.007 µg/L 0.007 µg/L Not Detected
NMeFOSAA 6/20/2023 <0.006 µg/L 0.006 µg/L Not Detected
lithium 6/20/2023 <9 µg/L 9 µg/L Not Detected
PFTA 3/21/2023 <0.008 µg/L 0.008 µg/L Not Detected
lithium 3/21/2023 <9 µg/L 9 µg/L Not Detected
NMeFOSAA 3/21/2023 <0.006 µg/L 0.006 µg/L Not Detected
PFTrDA 3/21/2023 <0.007 µg/L 0.007 µg/L Not Detected
NEtFOSAA 3/21/2023 <0.005 µg/L 0.005 µg/L Not Detected
NEtFOSAA 12/19/2023 <0.005 µg/L 0.005 µg/L Not Detected
NMeFOSAA 12/19/2023 <0.006 µg/L 0.006 µg/L Not Detected
PFTrDA 12/19/2023 <0.007 µg/L 0.007 µg/L Not Detected
lithium 12/19/2023 <9 µg/L 9 µg/L Not Detected
PFTA 12/19/2023 <0.008 µg/L 0.008 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.