How many C55 water conditioning contractors are licensed in California?

California has 318 contractors with a C55 (Water Conditioning) license from the Contractors State License Board. 305 (96%) hold active licenses. SiteVetter's C55 license lookup checks each against SAM.gov, OSHA, DOL, and EPA databases.

What does a C55 license cover in California?

A California C55 license covers water conditioning contractors for water treatment systems. Any contractor performing water conditioning work valued at $500 or more must hold this license. The CSLB issues and regulates all contractor licenses in the state.

What percentage of water conditioning contractors have federal violations?

2.2% of California water conditioning contractors (7 out of 318) have at least one record in federal databases. These include SAM.gov debarments, DOL wage violations, OSHA safety citations, and EPA environmental violations.

C55 Water Conditioning Contractors in California - Page 5 | CSLB License Lookup

C55 Water Conditioning Contractor License Lookup

Use this page when you need a California C55 license lookup, a list of licensed water conditioning contractors, or a quick screen before assigning water conditioning work to a sub. Each row links to a contractor profile with CSLB status, workers' comp, bond, federal records, and permit checks.

California has 318 CSLB C55 license records for water conditioning contractors. 96% currently hold active licenses and 2.2% 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 C55 Water Conditioning 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 Water Conditioning Work

For water conditioning work, 2.2% 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.

C55 Water Conditioning Contractors in California - Page 5

CSLB C55 License Scope

C55 Water Conditioning Contractor License Records

C55 Water Conditioning Contractor License Lookup

What to Check for C55 Water Conditioning Contractors

Why Federal Records Matter for Water Conditioning Work