National Environmental Health Tracking Network

The National Environmental Public Health Tracking Network (Tracking Network) is a system of integrated health, exposure, and hazard information and data from a variety of national, state, and city sources developed and maintained by the U.S. Center for Disease Control & Prevention (CDC).

On the Environmental Tracking Network, you can view maps, tables, and charts with data about:

•   chemicals and other substances found in the environment
•   some chronic diseases and conditions
•   the area where you live