Regulation & law · 26/09/2013Updated: 10/17/2026 · 1 min read

EPA Approves Ohio's Request to Redesignate Dayton Area for Cleaner Air

The US Environmental Protection Agency (EPA) has granted the State of Ohio's request to redesignate the Dayton-Springfield area in Ohio to meet the 1997 annual standard for fine particulate matter, a key air quality measure.