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Indiana Department of Environmental Management

Air Quality in Indiana

Air Quality in Indiana > Nonattainment > Nonattainment Designations > Lead (Pb) Nonattainment Designations Lead (Pb) Nonattainment Designations

This webpage is dedicated to Indiana's Nonattainment area designations for counties that do not meet the National Ambient Air Quality Standards (NAAQS) for Lead. Nonattainment areas are regions within the country where the concentration of one or more of the criteria pollutants exceeds the level set as the federal air quality standard.

Lead Nonattainment Designations