Agency for Toxic Substances and Disease Registry

toxic substances

Toxic Substances Portal

Look at the Toxic Substances Portal today!



Learn important information about Cadmium.

PFAS and Your Health

Per- and Polyfluoroalkyl Exposure Assessments (PFAS)

CDC/ATSDR will conduct exposure assessments in communities near current or former military installations known to have past or current presence of PFAS in drinking water.


ATSDR Stories from the Field

Learn about developing an app-based tool for disaster response.

ALS Biorepository

National ALS Biorepository

Learn how the National ALS Biorepository samples are being used.

The Agency for Toxic Substances and Disease Registry (ATSDR), based in Atlanta, Georgia, is a federal public health agency of the U.S. Department of Health and Human Services. ATSDR protects communities from harmful health effects related to exposure to natural and man-made hazardous substances. We do this by responding to environmental health emergencies; investigating emerging environmental health threats; conducting research on the health impacts of hazardous waste sites; and building capabilities of and providing actionable guidance to state and local health partners.

World Hearing Day
World Hearing Day: March 3rd. “Check your hearing.”
There is no cure for hearing loss! Damaged inner ear cells do not grow back. Protect your hearing by avoiding loud noise such as concerts and sporting events. Use earplugs or noise-cancelling earmuffs to protect your ears. If you already have hearing loss, take steps to keep it from getting worse. Get your hearing checked.

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Page last reviewed: March 11, 2019