Envirofacts is neither responsible for their informational content nor for their site operation, but provides references to them here as a convenience to our Internet users.
IRIS contains chemical health risk assessments and regulatory information.
Chemical Fact Sheets provide a summary on chemical exposure, health and environmental effects, regulatory information, and contact information. EPA's Office of Air Quality Planning and Standards Hazardous Air Pollutants Fact Sheets describe the effects on human health of substances that are defined as hazardous by the 1990 amendments of the Clean Air Act. EPA's Office of Ground Water and Drinking Water Contaminant Fact Sheets contain drinking water and health information on chemicals that may be found in our drinking water. The Environmental Defense Fund's Chemical Scorecard summarizes information about health effects, hazard rankings, industrial and consumer product uses, environmental releases and transfers, risk assessment values and regulatory coverage. These pages are maintained by the Envirofacts Support Team at the EPA Systems Development Center.