Sanitation system contractors in Petaluma, CA
5 licenses with the C-42 classification list Petaluma (Sonoma County) as their address with the state, 5 of them active. Active licenses with nothing flagged come first.
- Bryan Masterson EnterprisesA · B · C-4 · C-16 +4 · #271933 Petaluma · Sonoma County Active
- Charles Keller Construction IncB · C-12 · C-34 · C-42 · #885844 Petaluma · Sonoma County Active
- Ernest Ongaro & Sons Inc Dba Ongaro & SonsC-4 · C-10 · C-16 · C-20 +7 · #215233 Petaluma · Sonoma County Active
- Michael Paul Company IncA · C-12 · C-34 · C-42 · #386001 Petaluma · Sonoma County Active
- Redwood Septic ServicesC-42 · #1158226 Petaluma · Sonoma County Active
Source: CSLB license file, Nov 8, 2026All trades in Petaluma