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     Department of Public Works
     St. Louis County Government
     41 S. Central Avenue, 6th Fl.
     Clayton, MO 63105
     Phone: (314) 615-5184
     Fax: (314) 615-7085
     TTY: (314) 615-3748
     Send us your question or comment

    License Information

    Plumbing Registration and License Information

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    Forms for Apprentice

    Annual Apprentice Registration Report (for apprentices to complete)

    Application for Apprentice Plumber Registration

    Forms for both Journey or Master

    Application for Backflow Prevention Device Tester and Certificate

    Plumbing Code Application for Examination

    Forms for Master

    Annual Apprentice Registration Report (for Masters to complete)

    Declaration of License Assignment

    Master Surety Bond