The National Environmental Public Health Tracking Network measures environmental causes of chronic diseases. Measuring amounts of hazardous substances in our environment in a standard way, tracing the spread of these over time and area, seeing how they show up in human tissues, and understanding how they might cause illness is critical. The tracking program provides online data on the following: heath effects (e.g., asthma and birth defects), environmental hazards (e.g., carbon monoxide and air pollution), exposure data (e.g., lead) and other data (relationships between exposures and health effects).

See Data Source