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Drinking Water MCLs for PFAS Chemicals — Illinois

RegSenseState InfoWater AnalysisToxic Water PollutantsWater ProgramsWater ReportingMaximum Contaminant LevelsBest ResultsIllinoisEnvironmentalWater MonitoringWater ProgramsEnglishFocus AreaCWA Compliance

Illinois follows the federal Maximum Contaminant Levels (MCLs). 

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

The Illinois Safe Public Drinking Water Act requires that within one year of the Environmental Protection Agency promulgating MCLs for any PFAS, the Illinois Pollution Control Board must adopt identical rules.

Notably, the Illinois Pollution Control Board added six PFAS, including PFOA and PFOS, to the groundwater quality standards for Class I potable resource groundwater and Class II general resource groundwater.

Citations

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