Best Licensed Septic Contractors in Fairfield, CA

Homversa lists 3 septic companies registered in Fairfield holding current CSLB licenses, matched against the CSLB licensee file as of September 4, 2026. All 3 are listed below, ordered by workers' compensation cover and years licensed.

How we chose: We identified 3 septic companies registered in Fairfield. Every one of them holds a current license, checked against the official register. All 3 are listed below. Our methodology

11 active C-42 sanitation system licenses in Solano County; 4 registered in Fairfield
2 of Fairfield's 4 licenses (50.0%) carry current workers' compensation cover, not liability insurance; a blank usually means an owner-operator with no employees
Median time licensed in Fairfield: 7 years
Longest Fairfield licensure: since 2006
2 county licenses reach their expiration date within 90 days

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

1.Plumbing Solutions
✓ CSLB License #871320 - look up this number at CSLB (opens in a new window)
On the CSLB register since 2006, with workers' compensation cover on file and bonded at $25,000.
Verified
September 4, 2026
Registered in
Fairfield, CA 94534
Licensed since
2006
Phone
(707) 333-4094
2.Silvermark Construction Services Inc.
✓ CSLB License #1019403 - look up this number at CSLB (opens in a new window)
On the CSLB register since 2016, with workers' compensation cover on file and bonded at $25,000.
Verified
September 4, 2026
Registered in
Fairfield, CA 94534
Licensed since
2016
Phone
(707) 759-3434
3.Cya Septic
✓ CSLB License #1104603 - look up this number at CSLB (opens in a new window)
On the CSLB register since 2023, with bonded at $25,000.
Verified
September 4, 2026
Registered in
Fairfield, CA 94534
Licensed since
2023
Phone
(707) 688-2246

Compare the top 3 at a glance

Swipe the table sideways for all columns - the company name stays put.

Compare the top 3 Licensed Septic Contractors in Fairfield, CA
Septic Contractor	License	Workers' comp	Licensed since
Plumbing Solutions	#871320	On file	2006
Silvermark Construction Services Inc.	#1019403	On file	2016
Cya Septic	#1104603	Exempt or none on file	2023

How this page is built

Nobody pays to appear on this page, and position cannot be bought. A company is listed only where the official register showed it holding a current license when we checked on September 4, 2026.

Ranked by workers' compensation cover and years licensed.
Left off anything expired on the date we checked, or carrying any status other than current.
Not published at all until at least 3 septic companies pass that check. At most 10 appear - a cut through the ranking, not a further test.

The full method, including what each register does and does not publish.

Solano County septic 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-42 sanitation system licenses in Solano County, 4 of them registered in Fairfield. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median Fairfield license has been held 7 years, and the longest-standing one dates to 2006. 2 of Fairfield's 4 licenses (50.0%) 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. 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 Fairfield: common questions

How many licensed septic contractors are there in Fairfield?

4 active C-42 sanitation system licenses are registered in Fairfield, out of 11 across Solano County. 3 Fairfield-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 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 Fairfield and 11 across Solano County, the longest-standing issued in 2006. 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 2 of Fairfield's 4 currently carry. 2 Solano County licenses expire within 90 days.

Why is a company not on this list?

A company appears only when we can match it to a current record in the register this page is verified against - 3 companies passed that match for Fairfield. A credential that is expired or suspended, or a business we cannot conclusively match to a current record, never appears. A listed business that believes its information is wrong can reach us through the contact and corrections page at homversa.com/contact. How current each date is, and what happens when a credential lapses, are explained on our methodology page.

Which nearby cities have verified septic contractors?

Vacaville (3 verified), Napa (4 verified), Vallejo (3 verified), Martinez (3 verified) and Concord (4 verified) each publish their own list, verified separately against the state register, so the counts differ city by city. The links are in the nearby-cities section below.

Other services in Fairfield

All 21 trades in Fairfield

Septic Contractors in nearby cities

Deepest nearby market: Oakland ranks 10 septic companies for this trade within the same area.

All septic contractors in California