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States → Louisiana

CITY OF DENHAM SPRINGS WATER SYSTEM

PWS ID: LA1063004 · DENHAM SPRINGS, Louisiana 70727

PFAS Detected

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

Population Served
25,725
Total Violations
26
Health-Based Violations
9
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
8,124
County
Livingston Parish
School/Daycare
No
MCL Violations
9
Monitoring Violations
10
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MCL 9 2015
TTHM MR 4 2006
Total Haloacetic Acids (HAA5) MR 4 2006
Consumer Confidence Rule Other 2 1999
Lead and Copper Rule MR 2 2021

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 10 of 300 samples detected PFAS.

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