Best Licensed Septic Contractors in Union City, CA
3 septic companies registered in Union City 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.
- 71 active C-42 sanitation system licenses in Alameda County; 3 registered in Union City
- 3 of Union City's 3 licenses (100.0%) carry current workers' compensation cover, not liability insurance; a blank usually means an owner-operator with no employees
- Median time licensed in Union City: 16 years
- Longest Union City licensure: since 2006
- 11 county licenses reach their expiration date within 90 days
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- Verified
- August 17, 2026
- Licensed since
- 2006
- Phone
- (510) 471-2373
- Verified
- August 17, 2026
- Licensed since
- 2010
- Phone
- (510) 377-3341
- Verified
- August 17, 2026
- Licensed since
- 2021
- Phone
- (510) 557-8643
Compare the top 3 at a glance
| Company | License | Workers' comp | Licensed since |
|---|---|---|---|
| Qualified Plumbers Services Inc. | #884105 | On file | 2006 |
| Plumbing Connection | #944509 | On file | 2010 |
| Bayvalley Mechanical Inc. | #1072787 | On file | 2021 |
Alameda County septic licensure at a glance
California licenses contractors by classification and CSLB publishes one on every record, so supply can be counted exactly: 71 active C-42 sanitation system licenses in Alameda County, 3 of them registered in Union City. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median Union City license has been held 16 years, and the longest-standing one dates to 2006. 3 of Union City'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: 71 of the county's 71 licenses carry the same $25,000 bond California sets by statute. 11 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 Union City: common questions
How many licensed septic contractors are there in Union City?
3 active C-42 sanitation system licenses are registered in Union City, out of 71 across Alameda County. 3 Union City-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. 3 active C-42 sanitation system licenses are registered in Union City and 71 across Alameda 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 3 of Union City's 3 currently carry. 11 Alameda County licenses expire within 90 days.
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