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Septic Registry

Licensed septic companies in McClain County, Oklahoma

6 businesses on Oklahoma’s septic licensing records give McClain County as its address, alongside 6 individually licensed onsite professionals.

Licensed businesses based in McClain County

Individually licensed onsite professionals in McClain County

Oklahoma licenses people as well as companies. These are the named professionals the state has licensed, listed with the licence they hold and when it expires. They are usually employed by one of the businesses above.

Licensed onsite professionals in McClain County
NameLicenceCityExpires
Andy MaddenSubsurface absorption · Aerobic with spray dispersalNo. 361PurcellNot stated
Austin BoswellSubsurface absorption · Aerobic with spray dispersalNo. 1217BlanchardNot stated
Jim FrazierSubsurface absorption · Lagoon · Aerobic with spray dispersalNo. 334PurcellNot stated
Lendall HaysSubsurface absorption · Aerobic with spray dispersalNo. 1157WayneNot stated
Leon EngdahlSubsurface absorption · Lagoon · Aerobic with spray dispersalNo. 138PurcellNot stated
Michael GilbertSubsurface absorption · Aerobic with spray dispersalNo. 1142EdmondNot stated

Who handles septic permits in McClain County

Oklahoma DEQ certifies installers and publishes the whole list. A certified installer may inspect their own installation and backfill without waiting for a DEQ inspector, which is why the certification is worth checking rather than assuming.

How to verify a septic licence before you hire →

Towns in McClain County

Where in the county each licensed business is based.

Licensed companies in neighbouring counties

A Oklahoma septic licence is valid statewide, so a company listed in an adjoining county can legally do the work in McClain County.

Records as published August 26, 2026. A licence can lapse at any time — confirm with DEQ's own certified installer list before hiring. Report a correction.