Avondale is in Maricopa County, Arizona. We hold 223,158 septic records for Maricopa County, Arizona. Of the parcels classified in Maricopa, 105,260 are on septic — a county figure, not specific to Avondale. 1 septic business on record with a Avondale address, below.
Free septic design for a property here. Generate a code-referenced septic design from the parcel: design flow from bedroom count, tank sizing, soil-driven drainfield area, dispersal method and setbacks. Free to generate and view. Start a design
1
septic businesses here
223,158
county records held
105,260
county parcels on septic
100%
county docs text-searchable
Where Maricopa County, Arizona septic records are kept
Maricopa County, Arizona publishes onsite-wastewater records through OnBase. Records can be searched without an account.
1 business we have on record with a Avondale address: pumping, installation, design, inspection and repair. Not an endorsement, and we take no fee.
Company
Phone
Rating
Services
Arizona Pipemasters
(623) 535-4201
—
INSTALLER
Before calling any of them, pull the property's recorded as-built if one exists. It gives tank size, lid location and drainfield layout, which is the difference between a quoted job and an hourly dig.
Listing here is not an endorsement. We take no fee from any company on this page, we are not affiliated with them, and being listed does not mean the business is a customer of ours. Fields shown are limited to what we actually hold: no street address, hours or license numbers are shown unless we hold them, and none are invented.
Local septic work: pumping, installation, design, inspection, repair
Pumping. A pumper needs the lid location and tank capacity. Locating a buried lid without the recorded as-built is billed as labor.
Installation. A permit before work starts, an inspection while the system is open, and a final as-built submitted at completion, which is what ends up in the county file.
Design. Design flow from bedroom count, a soil and site evaluation, tank sizing and the required setbacks. On a lot with an existing permit, the original soil work is often already on file.
Inspection. Lenders and many counties require one at sale or transfer. Inspectors start from the recorded as-built; without it they are probing blind.
Repair. Starts from the existing as-built, since the current tank, field and any reserve area constrain what can be rebuilt.
Look up a specific property
Our map shows each parcel as septic, sewer, or unclassified, with the records we hold attached to the parcel.
Is there septic data specific to Avondale, or just Maricopa County?
We hold county-level septic and sewer classification, not a per-city breakdown. The figures on this page for Maricopa County, Arizona are county totals, clearly labelled as such, not an estimate for Avondale alone.
How many septic companies serve Avondale?
1 business on record with a Avondale address in our directory: pumping, installation, design, inspection and repair.
Can I get a septic design for free?
Yes. You can generate and view a code-referenced septic design for a parcel at no cost: design flow from bedroom count, tank sizing, soil-driven drainfield area, dispersal method and setbacks.
Where are septic records for Avondale kept?
Records for properties in Avondale are held by Maricopa County, Arizona through OnBase.
Figures on this page were last verified 2026-08-31.