Category: Septic Post Date: March 15, 2025

Local Septic Regulations Every Tucson Homeowner Should Know

Owning a home with a septic system in Tucson comes with responsibilities—not just for maintenance, but also for following state and local regulations. Understanding these rules helps protect public health, preserve the environment, and keep you in compliance with Arizona law.

Statewide Oversight: ADEQ Rules

In Arizona, the Arizona Department of Environmental Quality (ADEQ) regulates septic systems through the Onsite Wastewater Treatment Facilities program. These rules apply to the design, installation, operation, and maintenance of systems statewide.

  • All new systems must meet ADEQ’s design and permitting standards.
  • Major repairs or system replacements require permits and inspections.
  • System capacity must be based on the number of bedrooms and expected water use.

Pima County Requirements

Tucson is located in Pima County, which has its own delegated program for managing septic system permits and inspections. The Pima County Department of Environmental Quality (PDEQ) issues permits, reviews designs, and conducts inspections.

  • Construction Authorization (CA) is required before installing or replacing a system.
  • Discharge Authorization (DA) is issued after the final inspection is passed.
  • Systems must meet local setback requirements from wells, property lines, and water bodies.

Transfer of Ownership Inspection

When selling a home with a septic system, Arizona law requires a Transfer of Ownership Inspection within six months before closing. This inspection documents the system’s condition and ensures the new owner is aware of maintenance needs.

  • The seller is responsible for arranging the inspection.
  • The buyer must submit a Notice of Transfer after closing.
  • Pima County does not currently charge a Notice of Transfer fee.

Operational and Maintenance Rules

Following operational guidelines is essential for keeping your system compliant and functional.

  • Do not discharge prohibited substances like motor oil, pesticides, or paint into the system.
  • Maintain septic-safe practices to protect bacterial balance.
  • Schedule regular pumping and inspections as recommended by professionals.

Penalties for Non-Compliance

Failure to follow septic regulations can result in fines, mandatory repairs, and legal action. In severe cases, a failing system can be declared a public health hazard and require immediate replacement.

How Tucson Septic Systems Can Help

We help Tucson homeowners navigate ADEQ and Pima County regulations, from permitting new installations to conducting compliant Transfer of Ownership Inspections. Our knowledge of local rules ensures your septic system remains legal and efficient.

Contact Tucson Septic Systems today to schedule an inspection, apply for permits, or get expert guidance on septic compliance.

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