Verified licenseActive

Tanko Well Drilling

Altaville, CA · Calaveras County · Well drilling and pump installation

  • Pump Installation
  • Pump Repair
  • Well Abandonment
  • Well Drilling
  • Well Repair
Call (209) 736-2992

License record

Verified against state records
License number
423959
License type
Well drilling and pump installation
Status
Active
Expires
June 30, 2028
Last verified
September 29, 2026

Check this license yourself on the official state lookup.

Services on the state record

Holds an active California C-57 Well Drilling contractor license (CSLB license 423959, corporation, first issued 1982, current through 2028-06-30). The C-57 classification covers drilling, casing, cleaning, repairing and destroying water wells and installing and repairing well pumps. Filed 203 well completion reports with the Department of Water Resources since 2016 (200 new wells, 181 of them domestic supply; 1 well destructions), most recently in April 2026, mostly in Calaveras and Amador counties.

Service area

  • Calaveras County
  • Amador County

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