The Health Risk Assessment Unit within the Division of Environmental Health at the Minnesota Department of Health (MDH) develops and establishes rules for contaminants in groundwater. MDH goes through a complex process to develop Health Risk Limits for groundwater contaminants that includes input from scientific experts, risk managers and the public in developing values.
Health Risk Values for contaminants in air were adopted into rule in 2002.
Select the topic of interest below to view rules
MDH issues additional guidance on ambient air and groundwater contaminants that are not promulgated into rules. See Health-Based Rules and Guidance for Air and Guidance Values and Standards for Contaminants in Drinking Water.