Well & Septic ProsSween CoLicensed
| Name | Sween Co |
| License number | 38955 |
| License type | Onsite Wastewater Installer - Advanced |
| License status | Current registration |
| License expires | 2026-10-31 |
| Location | Wentzville, Missouri |
| Service area | Lincoln, St. Charles, St. Louis, Warren |
| Phone | (636) 699-6882 |
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 this listing exactly as it appears in Missouri's official licensing records; we do not vouch for the business itself. Before hiring, look up license #38955 directly with the state, confirm it is still active, and ask for a current certificate of insurance.
Source: Missouri registered onsite wastewater treatment system (OWTS) installers, last checked 2026-08-16. Verify at the official source.
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