(1) Any person selling or dealing in plumbing materials or supplies, but not engaged in the installation, alteration, repairing, or removal of plumbing, shall not be required to employ or have a licensed plumber in charge. (2) Nothing in this article 155 requires an individual to hold a license to perform plumbing work on the individual's own property or residence or prevents a person from employing an individual on either a full- or a part-time basis to do routine repair, maintenance, and replacement of sinks, faucets, drains, showers, tubs, toilets, and domestic appliances and equipment equipped with backflow preventers; except that, if such property or residence is intended for sale or resale by a person engaged in the business of constructing or remodeling the facilities or structures or is rental property that is occupied or is to be occupied by tenants for lodging, either transient or permanent, or is a commercial or industrial building, the owner is responsible for and the property is subject to the provisions of this article 155 pertaining to licensing, unless specifically exempted therein. (3) Nothing in this article 155 shall be construed to apply to the manufacture of housing that is subject to the provisions of article 32 of title 24 or the installation of individual residential or temporary construction units of manufactured housing water and sewer hookups inspected pursuant to section 12-155-105 (2). (4) Persons who are engaged in the business of installing, removing, inspecting, testing, and repairing backflow prevention devices are not exempt from licensure under this article 155, except when the persons are installing or testing a stand-alone fire suppression sprinkler system. (5) Nothing in this article 155 shall be construed to require either that employees of the federal government who perform plumbing work on federal property shall be required to be licensed before doing plumbing work on the property or that the plumbing work performed on the property shall be regulated pursuant to this article 155. (6) (a) Nothing in this article 155 requires a plumbing license, registration, or permit to perform: (I) The installation, extension, alteration, or maintenance, including the related water piping and the indirect waste piping, of domestic appliances equipped with backflow preventers, including lawn sprinkling systems; residential ice makers, humidifiers, electrostatic filter washers, or water heating appliances; building heating appliances and systems; fire protection systems except for multipurpose residential fire sprinkler systems in one- and two-family dwellings and townhouses that are part of the potable water supply; air conditioning installations; process and industrial equipment and piping systems; or indirect drainage systems not a part of a sanitary sewer system; or (II) The repair and replacement of garbage disposal units and dishwashers directly connected to the sanitary sewer system, including the necessary replacement of all tail pipes and traps, or the repair, maintenance, and replacement of sinks, faucets, drains, showers, tubs, and toilets. (b) Notwithstanding subsection (6)(a) of this section, "plumbing" does not include: (I) Installations, extensions, improvements, remodeling, additions, and alterations in water and sewer systems owned or acquired by counties pursuant to article 20 of title 30, cities and towns pursuant to article 35 of title 31, or water and sanitation districts pursuant to article 1 or article 4 of title 32; (II) Installations, extensions, improvements, remodeling, additions, and alterations performed by contractors employed by counties, cities, towns, or water and sewer districts that connect to the plumbing system within a property line; or (III) Performance, location, construction, alteration, installation, and use of on-site wastewater treatment systems pursuant to article 10 of title 25 that are located within a property line.
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