An official website of the United States government.

This is not the current EPA website. To navigate to the current EPA website, please go to This website is historical material reflecting the EPA website as it existed on January 19, 2021. This website is no longer updated and links to external websites and some internal pages may not work. More information »

Ozone Designations

EPA Responds to Recommendations for the 2015 Ozone Standards - San Antonio, TX

On March 19, 2018 , EPA responded to Texas’ recommendation for designating whether the San Antonio, TX area meets the national ambient air quality standards for ozone set in 2015.  After considering the state’s recommendation as well as other relevant technical information, EPA intends to designate the San Antonio area counties of Atascosa, Bandera, Comal, Guadalupe, Kendall, Medina, and Wilson as attainment/unclassifiable, and intends to modify Texas’s recommendation of attainment for Bexar County. EPA intends to designate all or portions of Bexar County as, at best, unclassifiable. EPA will consider additional information submitted by Texas before completing designations for this area by July 17, 2018.

Read the Notice of Availability and Public Comment .  

Read Texas recommendations and EPA's responses as well as accompanying technical support documents.

See a Summary of EPA's Response to State and Tribal Recommendations on Area Designations