Certified septic pumping companies in Mariposa County, CA

✓ 2 companies based in Mariposa 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 #
Amos Excavation	Coulterville, CA	Installer (C-42)	837251
Mariposa Tank Inc	Mariposa, CA	Installer (C-42)	617349

FAQs

How many certified septic pumping companies are in Mariposa County?

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

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