Wilthom LLCLicensed

License details

"Based in" is the city and county of the address on the business's license record.

What this license covers

• Site testing: licensed to run percolation tests and evaluate soils to determine what kind of system a site can support.
• Installation / repair: licensed to build and install septic tanks and drainfields, and to repair or replace failed ones.
• Inspection: licensed to inspect existing septic systems; the license you want for a home-purchase inspection.

How to verify this license

We publish the license details exactly as they appear in the public licensing records of the agency that issued the license; we do not vouch for the business itself. Before hiring, look up license #39123 (installer), 51449 (inspector), 51450 (inspector) directly with the agency that issued it, confirm it is still active, and ask for a current certificate of insurance.

Source: Missouri registered onsite wastewater treatment system (OWTS) installers + Missouri registered onsite soil evaluators + Missouri licensed onsite system inspectors/evaluators, last checked 2026-08-16. Look it up at the issuing agency.