Verified licenseActive

Tanko Dennis

Sonora, CA · Tuolumne County · Well drilling and pump installation

  • Pump Installation
  • Pump Repair
  • Well Abandonment
  • Well Drilling
  • Well Repair
Call (209) 532-7797

License record

Verified against state records
License number
530534
License type
Well drilling and pump installation
Status
Active
Expires
October 31, 2026
Last verified
September 29, 2026

Check this license yourself on the official California lookup.

Services on the state record

Holds an active California C-57 Well Drilling contractor license (CSLB license 530534, sole owner, first issued 1988, current through 2026-10-31). The C-57 classification covers drilling, casing, cleaning, repairing and destroying water wells and installing and repairing well pumps. No well completion reports filed with the Department of Water Resources since 2016 under this license number (pump work and repairs are not reported, and reports filed under a driller's individual name may not match).

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