Leeker Construction CoLicensed
License details
| License number | 35957 (installer), 50847 (inspector) |
| License type | Onsite Wastewater Installer - Advanced · Onsite Soil Evaluator · Onsite System Inspector |
| License status | Current registration |
| License expires | June 30, 2027 |
| Based in | St. Louis, Missouri |
| Counties declared to the state | Benton, Camden, St. Charles, St. Louis |
"Based in" is the city 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 #35957 (installer), 50847 (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.
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