Septic System Construction

You must have a permit to construct a septic system (Conventional or Alternative). Environmental Services is responsible for regulating the installation of alternative on-site wastewater disposal systems. Your septic system construction will be inspected. Please see the documents below for more information. Note: If you are planning to construct a new septic system, you may need to arrange for a site inspection (perc test) to determine suitability for a septic system on your property. If you would like to email requests for On-Site Septic Systems & Percolation results, click here.

• Septic System Permit: Application to Issuance Flow Chart(PDF, 69KB)
• Septic System Permit: Issuance to Completion Flow Chart(PDF, 68KB)
• Alternative System Permit: Application to Issuance Flow Chart(PDF, 15KB)
• Alternative System Permit: Issuance to Completion Flow Chart(PDF, 68KB)
• Affidavit of Encroachment (Wastewater Disposal)(PDF, 226KB)
  (Septic System Setback to Property Line Reduction)
• Alternate System Types(PDF, 138KB)
• Approval of Existing Conventional Septic System(PDF, 84KB)
• Certificate of Completion - Engineer(PDF, 513KB)
• Definition of a Bedroom(PDF, 150KB)
  (for residential projects with onsite wastewater systems)
• Request for Discharge Authorization (Tank Leak Test)(PDF, 221KB)
• Conventional Septic System Requirements for Final Inspection(PDF, 157KB)
• Homeowner Septic Education Manual(PDF, 1MB)
• Septic Permit Application - Alternative System(PDF, 115KB)
• Septic Permit Application - Conventional System(PDF, 697KB)
• Septic/Onsite Wastewater System Setbacks(PDF, 153KB)
• Trench Diagram(PDF, 179KB)
• Variance Request for Alternative Testing, Design, and/or Installation (A312G)(PDF, 200KB)
• Abandon Existing Septic System(PDF, 472KB)
• Design Flows for projects other than single family residences(PDF, 122KB)
• List of Materials(PDF, 1MB)
• Conventional Septic System Plot Plan Checklist(PDF, 422KB)
• Request for Registration of a Site Investigation(PDF, 417KB)
• Rock Correction Table(PDF, 978KB)
• Septic Tank Only Submittal Requirements(PDF, 450KB)

What You Should Know When You’re Having Your Septic System Inspected for the Transfer of Ownership Program

Arizona Administrative Code
The official rules for on-site wastewater treatment facilities, effective November 12, 2005, are contained in the Arizona Administrative Code, available on the AZ Secretary of State’s website. Chapter 9 - Articles 1, 3, 4, 7