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Best Licensed Septic Contractors in Modesto, CA

4 septic companies registered in Modesto hold current CSLB licenses, verified against official records as of August 17, 2026. All 4 are listed below, ordered by workers' compensation cover and years licensed.

How we chose: We identified 4 companies registered in Modesto. 4 passed license verification. All 4 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.Champion Industrial Contractors Inc.

    ✓ CSLB License #174777 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    1958
    Phone
    (209) 524-6601

  2. 2.Garcia Septic + Construction Inc.

    ✓ CSLB License #1070690 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    2020
    Phone
    (209) 238-3986

  3. 3.Jb Demo & Dirt

    ✓ CSLB License #1108036 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    2023
    Phone
    (209) 595-0870

  4. 4.West Side Plumbing

    ✓ CSLB License #1065075 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    2020
    Phone
    (209) 622-5723

Compare the top 4 at a glance

CompanyLicenseWorkers' compLicensed since
Champion Industrial Contractors Inc.#174777On file1958
Garcia Septic + Construction Inc.#1070690On file2020
Jb Demo & Dirt#1108036On file2023
West Side Plumbing#1065075Exempt or none on file2020

Stanislaus County septic licensure at a glance

California licenses contractors by classification and CSLB publishes one on every record, so supply can be counted exactly: 17 active C-42 sanitation system licenses in Stanislaus County, 4 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 5 years, and the longest-standing one dates to 1958. 3 of Modesto's 4 licenses (75.0%) 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: 17 of the county's 17 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.

Septic Contractors in Modesto: common questions

How many licensed septic contractors are there in Modesto?

4 active C-42 sanitation system licenses are registered in Modesto, out of 17 across Stanislaus County. 4 Modesto-registered companies passed our license verification, and all 4 are listed on this page. Only licenses CSLB shows as CLEAR and unexpired are listed.

Does California license septic contractors?

Yes. California licenses contractors by classification, and C-42 is the CSLB classification that authorises this work. 4 active C-42 sanitation system licenses are registered in Modesto and 17 across Stanislaus County, the longest-standing issued in 1958. Only CLEAR, unexpired licenses appear here.

How do I check a septic 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 4 currently carry. 2 Stanislaus County licenses expire within 90 days.

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