['Water Programs']

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

11/21/2025

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Drinking Water MCLs for PFAS Chemicals — Connecticut

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Drinking Water MCLs for PFAS Chemicals — Connecticut

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

Connecticut has state-specific non-enforceable action levels set for PFAS.

PFOS: 10 parts per trillion (ppt)
PFOA: 16 ppt

Proposed Connecticut Senate Bill 733 would establish MCLs for PFAS of no greater than 20 ppt. Until final MCLs for PFAS are released, DPH will continue to provide guidance to public water systems with PFAS detections based on current action levels.

Related information

Safe Drinking Water Act ezExplanation 
Drinking water (SDWA) ezExplanation 
CT DPH PFAS

Citations

Connecticut Senate Bill 733
Federal regulation 40 CFR Part 141 
Federal regulation 40 CFR Part 142 
Federal regulation 40 CFR Part 143

['Water Programs']

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

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