Environmental Quality

Click here to read a special announcement about department services offered during COVID-19.



The purpose of the Environmental Quality division is to protect the health of the public and the environment and promote effective onsite wastewater treatment. Authority for the wastewater program is delegated by the Arizona Department of Environmental Quality to Coconino County's Environmental Quality program.

Authority for the wastewater program is delegated by the Arizona Department of Environmental Quality (ADEQ) to Coconino County Community Development, Environmental Quality division (CCCDEQ). Coconino County has delegation for all conventional (septic systems) and some alternative onsite wastewater systems up to a capacity of 24,000 gallons per day (gpd). Larger systems such as Flagstaff, Williams, Page, Kachina Village, and Pinewood are regulated by ADEQ.

View the Onsite Wastewater process.

The Environmental Quality division is responsible for:
  • Site investigations
  • Reviewing applications for permits
  • Issuing construction authorizations
  • Inspecting newly constructed systems
  • Issuing authorizations for discharge from wastewater systems
  • Recording transfers of septic systems to new property owners
  • Licensing water, sewage, and garbage haulers 
Environmental Quality responds to nuisance complaints regarding raw sewage, gray water and solid waste.