Certified septic pumping companies in San Mateo County, CA

✓ 3 companies based in San Mateo County, from the CSLB Licensed C-42 Sanitation System Contractors (retrieved 2026-07-23). Companies based in neighboring counties often serve here too — see the full California list.

Company	Location	Certifications	License #
Conner Christopher Construction	Loma Mar, CA	Installer (C-42)	858858
J W Mcclenahan Co	San Mateo, CA	Installer (C-42)	308818
S And G Plumbing	Daly City, CA	Installer (C-42)	808214

FAQs

How many certified septic pumping companies are in San Mateo County?

3 companies in the CSLB Licensed C-42 Sanitation System Contractors are based in San Mateo County as of 2026-07-23. Companies based elsewhere in California also commonly serve the county.

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