H & R Underground

Certified septic pumping company · El Sobrante, CA · Contra Costa County

Certification status

Listed in the CSLB Licensed C-42 Sanitation System Contractors as of 2026-07-23 — verify current status at the official source

Certification categories

Installer (C-42)

License / registration #

878364

Location

4221 Appian Way, El Sobrante, CA, 94803

Phone (from public registry)

(510) 222-5556

This profile is compiled from public registry records. It is not an endorsement, and The Septic Directory has no business relationship with H & R Underground unless noted. Is this your company? Claim or correct this listing — it's free.

What septic pumping certification means

California licenses septic and sanitation system contractors under the C-42 (Sanitation System) classification through the Contractors State License Board; by law the board does not publish contractor email addresses.

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