Regulation & law · 16/11/2017Updated: 10/17/2026 · 1 min read

EPA Establishes Air Quality Designations for 2015 Ozone NAAQS

The Environmental Protection Agency (EPA) has designated 2,646 counties, including Indian Country, as Attainment/Unclassifiable or Unclassifiable, in accordance with the 2015 primary and secondary national ambient air quality standards (NAAQS) for ozone.