['Water Programs']

['Water Analysis', 'Water Reporting', 'Water Programs', 'Toxic Water Pollutants', 'Water Monitoring', 'Maximum Contaminant Levels']

11/24/2025

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Drinking Water MCLs for PFAS Chemicals — Louisiana

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Drinking Water MCLs for PFAS Chemicals — Louisiana

RegSense State Info Water Analysis Toxic Water Pollutants Water Programs Water Reporting Maximum Contaminant Levels Best Results Environmental Water Monitoring Water Programs English Louisiana Focus Area CWA Compliance

Louisiana does not currently follow federal Maximum Contaminant Levels (MCLs).  The state adopts by reference the federal maximum contaminant levels (MCLs) as in effect on July 1, 2015; however, the Environmental Protection Agency (EPA) finalized MCLs for PFOA and PFOS in 2024.

Louisiana has no state-specific PFAS drinking water requirements. Local utilities are preparing to meet federal guidelines by 2027.

Related information

Safe Drinking Water Act ezExplanation 
Drinking water (SDWA) ezExplanation 
LDH Per- and Polyfluoroalkyl Substances (PFAS)

Citations

Louisiana Administrative Code Section XII-377
Louisiana Administrative Code Section XII-101
Federal regulation 40 CFR Part 141 
Federal regulation 40 CFR Part 142 
Federal regulation 40 CFR Part 143

['Water Programs']

['Water Analysis', 'Water Reporting', 'Water Programs', 'Toxic Water Pollutants', 'Water Monitoring', 'Maximum Contaminant Levels']

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