['Water Programs']

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

11/25/2025

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Drinking Water MCLs for PFAS Chemicals — South Dakota

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Drinking Water MCLs for PFAS Chemicals — South Dakota

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

South Dakota follows the federal Maximum Contaminant Levels (MCLs). 

PFOA: 4 parts per trillion (ppt) 
PFOS: 4 ppt

There are no state-specific PFAS drinking water requirements. South Dakota incorporates by reference the federal MCLs set as of July 1, 2018. The state must update the regulations to incorporate by reference the newest version of federal MCLs with limits for PFOA and PFOS.  

South Dakota is actively monitoring drinking water for PFAS levels and has implemented measures to ensure compliance with federal regulations. 

Related information

Safe Drinking Water Act ezExplanation 
Drinking water (SDWA) ezExplanation 
South Dakota DANR PFAS Information

Citations

South Dakota Administrative Rules Section 74:04:12:21
Federal regulation 40 CFR Part 141 
Federal regulation 40 CFR Part 142 
Federal regulation 40 CFR Part 143

['Water Programs']

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

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