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Together we can make more clean air.

About the Maricopa County Air Quality Department

Metropolitan Phoenix Clean Air and the Federal Clean Air Act

The mission of the Maricopa County Air Quality Department is to provide clean air to Maricopa County residents and visitors so they can live, work and play in a healthy environment.

The Maricopa County Air Quality Department is a regulatory agency whose goal is to ensure federal clean air standards are achieved and maintained for the residents and visitors of Maricopa County. The Maricopa County Air Quality Department is governed by the Maricopa County Board of Supervisors and follows air quality standards set forth by the federal Clean Air Act.

There are five divisions within the Air Quality Department including:

Maricopa County’s Air Pollution Control Authority The department has statutory authority (ARS §49-402.B) for air quality programs and receives direct delegation/authority from the Environmental Protection Agency for certain air quality programs. In addition, the department has responsibility through a formal agreement with ADEQ and MAG for emission inventories, air quality monitoring data and its Trip Reduction Program.

The department manages the Clean Air Make More outreach initiative to promote cleaner air and healthier lives. For more information about the Maricopa County Air Quality Department, please visit www.maricopa.gov/aq.