GroundRosterKeith ThierryLicensed
| Name | Keith Thierry |
| License number | 102-004066 |
| License type | Water Well and Pump Installation Contractor |
| License status | Active — IDPH licensed water well contractor |
| Based in | Princeton, Bureau County, Illinois 61356 |
"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
- Pump installation: licensed to install, repair, and replace well pumps, pressure tanks, and the piping between the well and the building.
How to verify this license
We publish the license details exactly as they appear in Illinois's official licensing records; we do not vouch for the business itself. Before hiring, look up license #102-004066 directly with the state, confirm it is still active, and ask for a current certificate of insurance.
Source: Illinois Dept. of Public Health - Water Well Contractor licences, last checked 2026-08-17. Verify at the official source.
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