Sanitation system contractors in Concord, CA
5 licenses with the C-42 classification list Concord (Contra Costa County) as their address with the state, 5 of them active. Active licenses with nothing flagged come first.
- All Water Heaters & Plumbing LLCC-36 · C-42 · #1143044 Concord · Contra Costa County Active
- Guerra Bros Plumbing IncA · C-36 · C-42 · #802256 Concord · Contra Costa County Active
- N V Heathorn CoA · B · C-2 · C-4 +12 · #761659 Concord · Contra Costa County Active
- U S T Testing Services IncA · B · C-4 · C-12 +8 · #866797 Concord · Contra Costa County Active
- Echo Plumbing and RooterC-36 · C-42 · #1033391 Concord · Contra Costa County Active Workers' comp suspension pending
Source: CSLB license file, Nov 8, 2026All trades in Concord