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Licensing Requirements

License Title:



Reason for Credential: Except as provided under s. 145.06 (4) Stats., and pursuant to s. 145.06, Stats., no person may install plumbing unless the person holds a credential issued by the department as a licensed master plumber, licensed master plumber-restricted, licensed journeyman plumber, licensed journeyman plumber restricted, registered plumbing apprentice, registered plumbing learner-restricted, registered utility contractor or registered pipe layer.

Requirements of Credential: Pursuant to s. 145.14, Stats., the plumbing activities that may be undertaken by a person who holds a credential as a licensed master plumber-restricted appliance, licensed journeyman plumber-restricted appliance, or registered plumbing learner-restricted appliance shall be limited to the installation and modification of water heaters, water softeners, water treatment devices and other items in connection with an existing water supply system which do not require direct connection to the drain system. A person who holds the credential shall carry on his or her person the credential issued by the department while performing or conducting the activity or activities permitted under the credential.

The plumbing activities that may be undertaken by a person who holds a credential as a registered learner-restricted appliance shall be performed under the direct supervision of a person who holds a master plumber license, a master plumber-restricted appliance license, a journeyman plumber license or a journeyman plumber-restricted appliance license. A business engaged in the installation of plumbing that utilizes plumbing learners shall maintain a ratio of at least one journeyman plumber or journeyman plumber-restricted for each plumbing learner. For this purpose, a master plumber or master plumber-restricted may act as a journeyman plumber or journeyman plumber-restricted, respectively.

Qualifications for Credential: A person applying for a plumbing learner-restricted appliance registration to install or modify plumbing shall be at least 16 years old, shall have completed the 12th grade in school or its equivalent, and shall be employed by an acceptable business engaged in the installation of plumbing.

Licensing Authority:
WI Department of Safety and Professional Services
201 W. Washington Ave.
P.O. Box 7082
Madison, WI 53707-7082
(608)266-3151   (608)267-0592 fax


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