Air Quality

EPA’s air quality topics page

ADEQ’s air quality page

Maricopa County’s air quality page

Pima County’s air quality page

EPAs’ Greenhouse Gas Emissions Reporting Program

Water Quality

EPA background on the Clean Water Act

NPDES Permits

Arizona PDES Permits

Arizona Aquifer Protection Permits

Army Corps of Engineers Permits

Spill Prevention Control and Countermeasure Plans

Waste Management

Hazardous waste management

Solid waste management

Underground Storage Tanks

National Response Center Incident Reporting