National Environmental Public 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.

On the 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

You can also:

• Try our new Data Explorer
• Use our previous data query tool (Flash required)
• Search for Information by Location
• Visit State & Local Tracking Portals