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Best Licensed Well Drilling Contractors in Paso Robles, CA

8 well drilling companies registered in Paso Robles hold current CSLB licenses, verified against official records as of August 17, 2026. All 8 are listed below, ordered by workers' compensation cover and years licensed.

How we chose: We identified 8 companies registered in Paso Robles. 8 passed license verification. All 8 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.Case Pacific Company

    ✓ CSLB License #259827 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    1969
    Phone
    (805) 237-8851

  2. 2.Sierra Exploration Drilling Co Inc.

    ✓ CSLB License #327073 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    1976
    Phone
    (805) 238-3396

  3. 3.Pro-h20 Drilling And Pump Company

    ✓ CSLB License #767541 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    1999
    Phone
    (805) 674-8674

  4. 4.Hank's Welding Service

    ✓ CSLB License #831367 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    2004
    Phone
    (805) 238-2404

  5. 5.Midstate Drillers

    ✓ CSLB License #999944 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    2015
    Phone
    (907) 242-9066

  6. 6.Lyles Water Well Drilling

    ✓ CSLB License #1057892 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    2019
    Phone
    (805) 975-3799

  7. 7.Apex Pump And Well Services

    ✓ CSLB License #1115729 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    2024
    Phone
    (805) 835-9331

  8. 8.Cook Pump And Well Service

    ✓ CSLB License #1140304 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    2025
    Phone
    (805) 400-0151

Compare the top 6 at a glance

CompanyLicenseWorkers' compLicensed since
Case Pacific Company#259827On file1969
Sierra Exploration Drilling Co Inc.#327073On file1976
Pro-h20 Drilling And Pump Company#767541On file1999
Hank's Welding Service#831367On file2004
Midstate Drillers#999944On file2015
Lyles Water Well Drilling#1057892Exempt or none on file2019

San Luis Obispo 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: 23 active C-57 well drilling licenses in San Luis Obispo County, 8 of them registered in Paso Robles. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median Paso Robles license has been held 11 years, and the longest-standing one dates to 1969. 5 of Paso Robles's 8 licenses (62.5%) 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: 23 of the county's 23 licenses carry the same $25,000 bond California sets by statute. 2 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 Paso Robles: common questions

How many licensed well drilling contractors are there in Paso Robles?

8 active C-57 well drilling licenses are registered in Paso Robles, out of 23 across San Luis Obispo County. 8 Paso Robles-registered companies passed our license verification, and all 8 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. 8 active C-57 well drilling licenses are registered in Paso Robles and 23 across San Luis Obispo County, the longest-standing issued in 1969. 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 5 of Paso Robles's 8 currently carry. 2 San Luis Obispo County licenses expire within 90 days.

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