National Environmental Public Health Tracking Network

Explore health, exposure, and environmental data from national, state, and city sources. Collected data is presented in maps, tables, and charts, and is downloadable for further exploration. Data types include:

• Health effect data: Data about health conditions and diseases, such as asthma and birth defects.
• Environmental hazard data: Data about chemicals or other substances, such as carbon monoxide and air pollution in the environment.
• Exposure data: Data about the amount of a chemical in a person's body, such as lead in blood.
• Other data: Data that helps us learn about relationships between exposures and health effects. For example, information about age, sex, race, and behavior or lifestyle choices that may help us understand why a person has a particular health problem.