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Best Licensed Well Drilling Contractors in Modesto, CA

3 well drilling companies registered in Modesto 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 Modesto. 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.Hennings Bros Drilling Co Inc.

    ✓ CSLB License #290813 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    1974
    Phone
    (209) 545-1185

  2. 2.Howk Well & Equipment Co Inc. DBA Howk Systems

    ✓ CSLB License #479018 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    1985
    Phone
    (209) 529-4110

  3. 3.Masellis Drilling Inc.

    ✓ CSLB License #668622 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    1993
    Phone
    (209) 522-1928

Compare the top 3 at a glance

CompanyLicenseWorkers' compLicensed since
Hennings Bros Drilling Co Inc.#290813On file1974
Howk Well & Equipment Co Inc. DBA Howk Systems#479018On file1985
Masellis Drilling Inc.#668622On file1993

Stanislaus 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: 13 active C-57 well drilling licenses in Stanislaus County, 3 of them registered in Modesto. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median Modesto license has been held 40 years, and the longest-standing one dates to 1974. 3 of Modesto'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: 13 of the county's 13 licenses carry the same $25,000 bond California sets by statute. 0 county licenses reach their 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 Modesto: common questions

How many licensed well drilling contractors are there in Modesto?

3 active C-57 well drilling licenses are registered in Modesto, out of 13 across Stanislaus County. 3 Modesto-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 Modesto and 13 across Stanislaus County, the longest-standing issued in 1974. 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 Modesto's 3 currently carry. 0 Stanislaus County licenses expire within 90 days.

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