Velarion Records

EPA Air · nonattainment counties

Air sources in nonattainment counties

Every county EPA has designated as not meeting a National Ambient Air Quality Standard under the Clean Air Act, per the Green Book, most sources first. Each county page lists the sources in it.

Nonattainment designations from EPA’s Green Book.

What this page shows

This index page covers Clean Air Act facilities in the EPA air register. It lists 189,562 facilities nationwide and 94,980 facilities in nonattainment areas. The page lists 55 states and territories.