C-55 · Plumbing & water

Water Conditioning Contractor

312 contractors hold a California C-55 Water Conditioning Contractor license

What Does a C-55 License Cover?

Installs water conditioning equipment with only such pipe and fittings as necessary to connect to the water supply system and to bypass excluded portions.

Hiring a Water Conditioning Contractor

Water conditioning equipment must meet California Department of Public Health standards. Verify the system being proposed is certified for the specific contaminants in your water. Ask about ongoing maintenance costs and filter replacement schedules.

A California contractor license is generally required when a project costs $1,000 or more in combined labor and materials, requires a building permit, or uses additional workers. Small jobs cannot be split from a larger project to qualify for the exemption. Read the CSLB requirements.

Also in Plumbing & water

C-36: Plumbing Contractor C-34: Pipeline Contractor C-42: Sanitation System Contractor C-57: Well Drilling Contractor

Related Classifications

C-36: Plumbing Contractor

Licensing Resources

Deposit and payment rules for California contracts
Home improvement contract requirements
How to verify a contractor license

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