GroundRosterRandy MarquisLicensed
| Name | Randy Marquis |
| License number | WD00479 |
| License type | Open Loop Geothermal, Pump Installer - Master, Well Driller - Master |
| License status | Current - Maine DHHS roster, expires 2026-12-31 |
| License expires | 2026-12-31 |
| Based in | Sanford, Maine 04073 |
| Phone | (207) 459-0720 |
"Based in" is the city 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
- Drilling / construction: licensed to bore, case, complete, and plug water wells.
- Pump installation: licensed to install, repair, and replace well pumps, pressure tanks, and the piping between the well and the building.
- Geothermal loops: also licensed to bore the open- or closed-loop wells that serve a ground-source heat pump.
How to verify this license
We publish the license details exactly as they appear in Maine's official licensing records; we do not vouch for the business itself. Before hiring, look up license #WD00479 directly with the state, confirm it is still active, and ask for a current certificate of insurance.
Source: Maine DHHS - Well Driller & Pump Installer License Holders, last checked 2026-08-17. Verify at the official source.
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