Abstract: The Environmental Protection Agency (EPA) compiles data on emission tonnages of air pollutants for US counties.  US Air Quality Gradebook ("AirGrades") source sheets give the percentage contributions from specific air pollution sources.  This source sheet is for

Webster County, Missouri; Worth County, Missouri; and Wright County, Missouri.  The Webster County Seat is Marshfield, Missouri; the Worth County Seat is Grant City, Missouri; and the Wright County Seat is Hartville, Missouri.