National Environmental Public Health Tracking Network
The National Environmental Public Health Tracking Network is being implemented by CDC, in collaboration with federal, state, and local health and environment agencies. Its purpose is to use linked health effect, exposure, and hazard data for environmental public health surveillance. As of 2010,16 states are actively tracking data; 22 states are funded. The 6 states that are funded, but not tracking are in the process of establishing their systems.
http://ephtracking.cdc.gov/showHome.action and related web pages.