Fact sheet that answers the most frequently asked questions about a contaminant and its health effects.

Summary about a hazardous substance taken from Chapter One of its respective ATSDR Toxicological Profile.

Succinctly characterizes the toxicologic and adverse health effects information for a hazardous substance.

Quick reference guide providing information such as chemical and physical properties, sources of exposure, routes of exposure, minimal risk levels, children's health, and health effects for a substance.

Prioritization of substances based on a combination of their frequency, toxicity, and potential for human exposure at National Priorities List (NPL) sites.

The MRL is an estimate of the daily human exposure to a hazardous substance that is likely to be without appreciable risk of adverse, non-cancer health effects over a specified duration of exposure. The information in this MRL serves as a screening tool to help public health professionals decide where to look more closely to evaluate possible risk of adverse health effects from human exposure.