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States → Louisiana

ST TAM PARISH - CROSS GATES SD

PWS ID: LA1103053 · COVINGTON, Louisiana 70433

PFAS Detected

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

Population Served
7,791
Total Violations
49
Health-Based Violations
16
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
2,597
County
St. Tammany Parish
School/Daycare
No
MCL Violations
12
Monitoring Violations
17
Treatment Tech Violations
4

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MCL 12 2006
Chlorine MR 11 2017
Consumer Confidence Rule Other 7 2006
Groundwater Rule TT 4 2021
Coliform (TCR) MR 3 2016
Revised Total Coliform Rule MON 3 2017
Public Notice Other 2 2017

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 5 of 120 samples detected PFAS.

Contaminant Date Result MRL Status
PFPeS 7/8/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFTrDA 7/8/2024 <0.007 µg/L 0.007 µg/L Not Detected
NEtFOSAA 7/8/2024 <0.005 µg/L 0.005 µg/L Not Detected
NMeFOSAA 7/8/2024 <0.006 µg/L 0.006 µg/L Not Detected
PFBS 7/8/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHpA 7/8/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHxS 7/8/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFNA 7/8/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFDA 7/8/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 7/8/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHxA 7/8/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFPeA 7/8/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 7/8/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFMPA 7/8/2024 <0.004 µg/L 0.004 µg/L Not Detected
NFDHA 7/8/2024 <0.02 µg/L 0.02 µg/L Not Detected
lithium 7/8/2024 11.9000 µg/L 9 µg/L Detected
PFHpS 7/8/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFOS 7/8/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFOA 7/8/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFUnA 7/8/2024 <0.002 µg/L 0.002 µg/L Not Detected
11Cl-PF3OUdS 7/8/2024 <0.005 µg/L 0.005 µg/L Not Detected
9Cl-PF3ONS 7/8/2024 <0.002 µg/L 0.002 µg/L Not Detected
ADONA 7/8/2024 <0.003 µg/L 0.003 µg/L Not Detected
HFPO-DA 7/8/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFBA 7/8/2024 <0.005 µg/L 0.005 µg/L Not Detected
6:2 FTS 7/8/2024 <0.005 µg/L 0.005 µg/L Not Detected
4:2 FTS 7/8/2024 <0.003 µg/L 0.003 µg/L Not Detected
8:2 FTS 7/8/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFEESA 7/8/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFTA 7/8/2024 <0.008 µg/L 0.008 µg/L Not Detected
PFMPA 7/8/2024 <0.004 µg/L 0.004 µg/L Not Detected
NMeFOSAA 7/8/2024 <0.006 µg/L 0.006 µg/L Not Detected
NEtFOSAA 7/8/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFTrDA 7/8/2024 <0.007 µg/L 0.007 µg/L Not Detected
PFTA 7/8/2024 <0.008 µg/L 0.008 µg/L Not Detected
PFHpS 7/8/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFPeS 7/8/2024 <0.004 µg/L 0.004 µg/L Not Detected
NFDHA 7/8/2024 <0.02 µg/L 0.02 µg/L Not Detected
PFEESA 7/8/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 7/8/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 7/8/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFDA 7/8/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFOA 7/8/2024 <0.004 µg/L 0.004 µg/L Not Detected
lithium 7/8/2024 11.6000 µg/L 9 µg/L Detected
PFPeA 7/8/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFUnA 7/8/2024 <0.002 µg/L 0.002 µg/L Not Detected
8:2 FTS 7/8/2024 <0.005 µg/L 0.005 µg/L Not Detected
4:2 FTS 7/8/2024 <0.003 µg/L 0.003 µg/L Not Detected
6:2 FTS 7/8/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFBA 7/8/2024 <0.005 µg/L 0.005 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.