As of 3/31/21, the AQBillPay portal has been discontinued. Please use one of the Maricopa County Air Quality Department’s (MCAQD) online portals to submit your payment:

Use the AQD Online Portal (encromerr.epa.gov) for:

  • Annual Administrative fees for General, Non-Title V, and Title V Permits,
  • Billable engineering hours for permit modifications,
  • Asbestos NESHAP notification fees,
  • Permit application fees for new General, Non-Title V, or Title V Permits, or
  • Emission Fees for Title-V Permits.

Instructions and help documents for the AQD Online Portal are available at Maricopa.gov/1820.


Use the Dust and Miscellaneous Portal (dm.maricopa.gov) for:

  • Dust Control Permit fees,
  • Subcontractor Registration fees (new or renewal),
  • Open Burn Permit fees, or
  • Tanker Truck Certification (Vapor Decal) application fees (annual or replacement).

Instructions and help documents for the Dust and Miscellaneous Portal are available at Maricopa.gov/5560.

If you have questions or need assistance please contact MCAQD at 602-506-6010 or AQPermits@maricopa.gov.