How many C42 sanitation system contractors are licensed in California?

California has 1,011 contractors with a C42 (Sanitation System) license from the Contractors State License Board. 978 (97%) hold active licenses. SiteVetter's C42 license lookup checks each against SAM.gov, OSHA, DOL, and EPA databases.

What does a C42 license cover in California?

A California C42 license covers sanitation system contractors for septic and sewage systems. Any contractor performing sanitation system work valued at $500 or more must hold this license. The CSLB issues and regulates all contractor licenses in the state.

What percentage of sanitation system contractors have federal violations?

8.0% of California sanitation system contractors (81 out of 1,011) have at least one record in federal databases. These include SAM.gov debarments, DOL wage violations, OSHA safety citations, and EPA environmental violations.

C42 Sanitation System Contractors in California - Page 2 | CSLB License Lookup

C42 Sanitation System Contractor License Lookup

Use this page when you need a California C42 license lookup, a list of licensed sanitation system contractors, or a quick screen before assigning sanitation system work to a sub. Each row links to a contractor profile with CSLB status, workers' comp, bond, federal records, and permit checks.

California has 1,011 CSLB C42 license records for sanitation system contractors. 97% currently hold active licenses and 8.0% have at least one federal compliance record. SiteVetter checks CSLB status, SAM.gov debarment, DOL wage violations, OSHA safety citations, EPA environmental records, and building permits in seconds.

What to Check for C42 Sanitation System Contractors

Verify the contractor license is active and in good standing
Request proof of insurance and bonding
Get at least 3 written quotes before selecting a contractor
Check federal databases: SAM.gov, OSHA, DOL, and EPA records
Confirm bond: California requires $25,000+ contractor bond (SB 607)

Why Federal Records Matter for Sanitation System Work

For sanitation system work, 8.0% of licensed contractors have federal records that a standard CSLB license check would not reveal. SiteVetter's 6-source lookup gives GCs a faster way to compare subs before bid award, onboarding, or renewal review.

C42 Sanitation System Contractors in California - Page 2

CSLB C42 License Scope

C42 Sanitation System Contractor License Records

C42 Sanitation System Contractor License Lookup

What to Check for C42 Sanitation System Contractors

Why Federal Records Matter for Sanitation System Work