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Iowa Whole or Part County Nonattainment Status by Year Since 1992 for all Criteria PollutantsAs of February 13, 2017
The 8-hour Ozone (1997) standard was revoked on April 6, 2015 and the 1-hour Ozone (1979) standard was revoked on June 15, 2005.
Listed by State, County, NAAQS (W=Whole County,P=Partial County designated nonattainment as of report date) Important Notes
|Muscatine Co||Sulfur Dioxide (1971)||P||P||P||P|
|Muscatine Co||Sulfur Dioxide (2010)||P||P||P||P||P|
|Pottawattamie Co||Lead (2008)||P||P||P||P||P||P||P|