Bertram Drilling Inc
License 703688 Active
- Geothermal
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Holds an active California C-57 Well Drilling contractor license (CSLB license 487027, sole owner, first issued 1986, current through 2028-02-29). The C-57 classification covers drilling, casing, cleaning, repairing and destroying water wells and installing and repairing well pumps. Also licensed as: C-10 electrical. Filed 156 well completion reports with the Department of Water Resources since 2016 (77 new wells, 140 of them domestic supply; 77 well destructions), most recently in April 2025, mostly in Napa and Solano counties.
License 703688 Active
License 780357 Active
License 258826 Active