GroundRosterHarlan Aerobic Septic ServicesLicensed
| Name | Harlan Aerobic Septic Services |
| Company | Charles Harlan |
| License number | 756 |
| License type | Certified Installer |
| License status | Active - DEQ certified installer |
| Based in | Owasso, Tulsa County, Oklahoma 74055 |
| Work types on the roster | Subsurface, Aerobic Spray |
| Phone | (918) 261-0544 |
"Based in" is the city and county of the address on the business's state license record. That can be a mailing address; it doesn't tell you where the business works.
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What this license covers
- Installation / repair: licensed to build and install septic tanks and drainfields, and to repair or replace failed ones.
How to verify this license
We publish the license details exactly as they appear in Oklahoma's official licensing records; we do not vouch for the business itself. Before hiring, look up license #756 directly with the state, confirm it is still active, and ask for a current certificate of insurance.
Source: Oklahoma DEQ - Certified Installers, last checked 2026-08-19. Verify at the official source.
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