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ZACHARY WATER SYSTEM

PWS ID: LA1033030 · ZACHARY, Louisiana 70791

PFAS Detected

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

Population Served
31,569
Total Violations
39
Health-Based Violations
30
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
10,523
County
East Baton Rouge Parish
School/Daycare
No
MCL Violations
30
Monitoring Violations
2
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MCL 30 2015
Coliform (TCR) MR 2 1997

PFAS Testing Results (UCMR5)

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

Contaminant Date Result MRL Status
9Cl-PF3ONS 6/19/2023 <0.002 µg/L 0.002 µg/L Not Detected
HFPO-DA 6/19/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFBA 6/19/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFMPA 6/19/2023 <0.004 µg/L 0.004 µg/L Not Detected
4:2 FTS 6/19/2023 <0.003 µg/L 0.003 µg/L Not Detected
8:2 FTS 6/19/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFUnA 6/19/2023 <0.002 µg/L 0.002 µg/L Not Detected
PFBS 6/19/2023 <0.003 µg/L 0.003 µg/L Not Detected
6:2 FTS 6/19/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFHxA 6/19/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 6/19/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFDA 6/19/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFOA 6/19/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFOS 6/19/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFNA 6/19/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFHpA 6/19/2023 <0.003 µg/L 0.003 µg/L Not Detected
lithium 6/19/2023 14.1000 µg/L 9 µg/L Detected
ADONA 6/19/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFPeA 6/19/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFHxS 6/19/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFTA 6/19/2023 <0.008 µg/L 0.008 µg/L Not Detected
11Cl-PF3OUdS 6/19/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFMBA 6/19/2023 <0.003 µg/L 0.003 µg/L Not Detected
NMeFOSAA 6/19/2023 <0.006 µg/L 0.006 µg/L Not Detected
PFTrDA 6/19/2023 <0.007 µg/L 0.007 µg/L Not Detected
PFEESA 6/19/2023 <0.003 µg/L 0.003 µg/L Not Detected
NFDHA 6/19/2023 <0.02 µg/L 0.02 µg/L Not Detected
NEtFOSAA 6/19/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFHpS 6/19/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFPeS 6/19/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFOS 6/19/2023 <0.004 µg/L 0.004 µg/L Not Detected
HFPO-DA 6/19/2023 <0.005 µg/L 0.005 µg/L Not Detected
ADONA 6/19/2023 <0.003 µg/L 0.003 µg/L Not Detected
9Cl-PF3ONS 6/19/2023 <0.002 µg/L 0.002 µg/L Not Detected
11Cl-PF3OUdS 6/19/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFUnA 6/19/2023 <0.002 µg/L 0.002 µg/L Not Detected
PFHxA 6/19/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 6/19/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFHpA 6/19/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFOA 6/19/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFBA 6/19/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFNA 6/19/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFHxS 6/19/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFBS 6/19/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFDA 6/19/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFTA 6/19/2023 <0.008 µg/L 0.008 µg/L Not Detected
NMeFOSAA 6/19/2023 <0.006 µg/L 0.006 µg/L Not Detected
PFHpS 6/19/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFPeS 6/19/2023 <0.004 µg/L 0.004 µg/L Not Detected
NFDHA 6/19/2023 <0.02 µg/L 0.02 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.