An educational, cited reference for homeowners — not a claim that ClickSeptic services Arizona today. ClickSeptic has zero live markets anywhere yet.
Short answer: The Arizona Department of Environmental Quality (ADEQ) regulates onsite wastewater treatment facilities (septic systems) statewide under Arizona Administrative Code Title 18, Chapter 9, primarily via general permits (Type 4). ADEQ has delegated most day-to-day permitting authority to Arizona's counties (e.g., Maricopa, Pima), which issue permits and conduct oversight under county programs approved by the state, making Arizona a state-framework/county-administered system similar to Washington's.
Last updated: September 2026. This page summarizes public Arizona regulatory information for homeowner reference and is not legal advice — always confirm current requirements directly with the state or local agency cited below. ClickSeptic has not launched in any market and has zero operators onboarded anywhere today; this page does not claim ClickSeptic provides service in Arizona or anywhere else.
The Arizona Department of Environmental Quality (ADEQ) regulates onsite wastewater treatment facilities (septic systems) statewide under Arizona Administrative Code Title 18, Chapter 9, primarily via general permits (Type 4). ADEQ has delegated most day-to-day permitting authority to Arizona's counties (e.g., Maricopa, Pima), which issue permits and conduct oversight under county programs approved by the state, making Arizona a state-framework/county-administered system similar to Washington's.
Arizona explicitly codifies an inspection-at-sale requirement: A.A.C. R18-9-A316 requires anyone transferring ownership of a property served by an onsite wastewater treatment facility to retain a qualified inspector to perform a Transfer of Ownership inspection within six months before the transfer, provide the resulting Report of Inspection to the buyer before closing, and have the buyer file a Notice of Transfer with a fee within 15 calendar days after transfer; this requirement cannot be waived.
There is no fixed statewide calendar-based pumping mandate in Arizona rule; A.A.C. R18-9-A313 requires permittees to pump accumulated residues and inspect/clean components per the general permit or an owner's O&M manual rather than on a fixed number of years. County guidance (e.g., Maricopa, Mohave) recommends roughly every 3-5 years based on tank size and household use, but that is advisory, not a codified statewide interval.
Onsite wastewater permits (installation, repair, and the Notice of Transfer at sale) are issued locally by county environmental/health departments operating under ADEQ-delegated general permit programs (A.A.C. Title 18, Chapter 9); ADEQ itself issues permits directly only where a county has not been delegated authority.
Arizona is one of the few states with a hard-coded, non-waivable statewide transfer-of-ownership septic inspection law (R18-9-A316), complete with a mandatory buyer-filed Notice of Transfer and fee within 15 days of closing — a level of state-level codification around point-of-sale septic inspection that most delegated states leave entirely to individual counties.
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