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Best Licensed Well Drilling Contractors in Auburn, CA

3 well drilling companies registered in Auburn hold current CSLB licenses, verified against official records as of August 17, 2026. All 3 are listed below, ordered by workers' compensation cover and years licensed.

How we chose: We identified 3 companies registered in Auburn. 3 passed license verification. All 3 are listed below. Our methodology

We earn a fee when you call businesses through numbers on this site. This never affects who is listed or how they rank.

  1. 1.Gary C Tanko Well Drilling Inc.

    ✓ CSLB License #282051 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    1973
    Phone
    (530) 823-8234

  2. 2.Diamond Well Drilling Company Inc.

    ✓ CSLB License #970862 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    2012
    Phone
    (530) 823-0354

  3. 3.West Slope Water Works Inc.

    ✓ CSLB License #985327 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    2013
    Phone
    (530) 305-6659

Compare the top 3 at a glance

CompanyLicenseWorkers' compLicensed since
Gary C Tanko Well Drilling Inc.#282051On file1973
Diamond Well Drilling Company Inc.#970862On file2012
West Slope Water Works Inc.#985327On file2013

Placer County well drilling licensure at a glance

California licenses contractors by classification and CSLB publishes one on every record, so supply can be counted exactly: 11 active C-57 well drilling licenses in Placer County, 3 of them registered in Auburn. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median Auburn license has been held 14 years, and the longest-standing one dates to 1973. 3 of Auburn's 3 licenses (100.0%) carry current workers' compensation cover in CSLB's file. That is employee injury cover, not liability insurance, and a blank usually means an owner-operator with no employees - lawful, and not a mark against anyone. The contractor bond is not a signal here: 11 of the county's 11 licenses carry the same $25,000 bond California sets by statute. 1 county license reaches its expiration date within the next 90 days. CSLB cannot link straight to a license record, so every listing above shows its number for you to type into CSLB's license lookup. How we verify.

Well Drilling Contractors in Auburn: common questions

How many licensed well drilling contractors are there in Auburn?

3 active C-57 well drilling licenses are registered in Auburn, out of 11 across Placer County. 3 Auburn-registered companies passed our license verification, and all 3 are listed on this page. Only licenses CSLB shows as CLEAR and unexpired are listed.

Does California license well drilling contractors?

Yes. California licenses contractors by classification, and C-57 is the CSLB classification that authorises this work. 3 active C-57 well drilling licenses are registered in Auburn and 11 across Placer County, the longest-standing issued in 1973. Only CLEAR, unexpired licenses appear here.

How do I check a well drilling contractor's license in California?

Every listing above shows its CSLB license number. CSLB cannot link straight to a record, so open its license lookup and type the number in: it shows status, expiration, the contractor bond and workers' compensation cover, which 3 of Auburn's 3 currently carry. 1 Placer County license expires within 90 days.

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