EPAFinal Rule
Air Quality State Implementation Plans; Approvals and Promulgations: Kentucky; Redesignation of the Kentucky Portion of the Louisville, KY-IN 2015 8-Hour Ozone Nonattainment Area to Attainment
EnvironmentTransportationHealthcare
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Summary
The EPA is officially recognizing that the Kentucky portion of the Louisville area has improved its air quality enough to meet federal clean air standards for ozone pollution. This means the region no longer needs the strict pollution-control requirements that were previously required, though Kentucky must still maintain these air quality improvements going forward.
Key Points
- 1Kentucky's Louisville area has successfully reduced ground-level ozone pollution to safe levels after years of air quality improvement efforts
- 2The region is being removed from the 'nonattainment' list, meaning it no longer violates federal clean air standards for this particular pollutant
- 3Kentucky must develop and follow a maintenance plan to ensure ozone levels stay healthy and don't backslide in the future
- 4This change affects businesses and local governments in Kentucky's portion of the Louisville metro area by reducing certain regulatory requirements
- 5The improvement shows that pollution control measures implemented over the past decade have worked to make the air safer to breathe
Key Dates
Published
January 29, 2026
This summary is for informational purposes only. It may not capture all nuances of the regulation. Always refer to the official text for authoritative information.
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