Verified licenseActive

Weeks Drilling and Pump Co

Sebastopol, CA · Sonoma County · Well drilling and pump installation

  • Pump Installation
  • Pump Repair
  • Water Treatment
  • Well Abandonment
  • Well Drilling
  • Well Repair
Call (707) 823-3184Website

License record

Verified against state records
License number
177681
License type
Well drilling and pump installation
Status
Active
Expires
September 30, 2028
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 177681, corporation, first issued 1958, current through 2028-09-30). The C-57 classification covers drilling, casing, cleaning, repairing and destroying water wells and installing and repairing well pumps. Also licensed as: D-21 machinery and pumps, C-36 plumbing. Filed 2,231 well completion reports with the Department of Water Resources since 2016 (1,651 new wells, 1,271 of them domestic supply; 578 well destructions), most recently in September 2026, mostly in Sonoma, Mendocino and Lake counties.

Service area

  • Sonoma County
  • Mendocino County
  • Lake County
  • Napa County
  • Marin County
  • Solano County
  • Contra Costa County
  • San Mateo County

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