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States → Louisiana

CITY OF DERIDDER WATER SYSTEM

PWS ID: LA1011001 · DERIDDER, Louisiana 70634

Population Served
14,400
Total Violations
22
Health-Based Violations
10
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
4,800
County
Beauregard Parish
School/Daycare
No
MCL Violations
9
Monitoring Violations
8
Treatment Tech Violations
1

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MCL 9 2013
Revised Total Coliform Rule MON 4 2016
Chlorine MR 4 2015
Consumer Confidence Rule Other 2 2008
LEAD AND COPPER RULE REVISIONS TT 1 2024

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 0 of 240 samples detected PFAS.

Contaminant Date Result MRL Status
HFPO-DA 5/14/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFBA 5/14/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFTA 5/14/2024 <0.008 µg/L 0.008 µg/L Not Detected
PFTrDA 5/14/2024 <0.007 µg/L 0.007 µg/L Not Detected
NMeFOSAA 5/14/2024 <0.006 µg/L 0.006 µg/L Not Detected
PFHpS 5/14/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFPeS 5/14/2024 <0.004 µg/L 0.004 µg/L Not Detected
NFDHA 5/14/2024 <0.02 µg/L 0.02 µg/L Not Detected
PFEESA 5/14/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 5/14/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFPeA 5/14/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFMPA 5/14/2024 <0.004 µg/L 0.004 µg/L Not Detected
8:2 FTS 5/14/2024 <0.005 µg/L 0.005 µg/L Not Detected
9Cl-PF3ONS 5/14/2024 <0.002 µg/L 0.002 µg/L Not Detected
6:2 FTS 5/14/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFBS 5/14/2024 <0.003 µg/L 0.003 µg/L Not Detected
ADONA 5/14/2024 <0.003 µg/L 0.003 µg/L Not Detected
11Cl-PF3OUdS 5/14/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFUnA 5/14/2024 <0.002 µg/L 0.002 µg/L Not Detected
PFHxA 5/14/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 5/14/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFDA 5/14/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFOA 5/14/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFOS 5/14/2024 <0.004 µg/L 0.004 µg/L Not Detected
lithium 5/14/2024 <9 µg/L 9 µg/L Not Detected
PFNA 5/14/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFHxS 5/14/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHpA 5/14/2024 <0.003 µg/L 0.003 µg/L Not Detected
4:2 FTS 5/14/2024 <0.003 µg/L 0.003 µg/L Not Detected
NEtFOSAA 5/14/2024 <0.005 µg/L 0.005 µg/L Not Detected
6:2 FTS 5/14/2024 <0.005 µg/L 0.005 µg/L Not Detected
4:2 FTS 5/14/2024 <0.003 µg/L 0.003 µg/L Not Detected
8:2 FTS 5/14/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFMPA 5/14/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFPeA 5/14/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFEESA 5/14/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHxS 5/14/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHpA 5/14/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFBA 5/14/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFOA 5/14/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFPeS 5/14/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFBS 5/14/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 5/14/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFOS 5/14/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFHpS 5/14/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFNA 5/14/2024 <0.004 µg/L 0.004 µg/L Not Detected
lithium 5/14/2024 <9 µg/L 9 µg/L Not Detected
PFTA 5/14/2024 <0.008 µg/L 0.008 µg/L Not Detected
PFTrDA 5/14/2024 <0.007 µg/L 0.007 µg/L Not Detected
PFDoA 5/14/2024 <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.