The provisions of The Plumbing License Law of 1955 shall not apply to:

1. 1. Minor repairs, consisting of repairing or replacing faucets or minor working parts of plumbing fixtures;
2. 2. Farm buildings located outside any city or town unless such buildings are connected to a public water or sewer system;
3. 3. Maintenance work for state institutions and school districts;
4. 4. The installation, maintenance, repair, renovation of automatic sprinkler systems and related mechanical appurtenances beginning at a point where the pipe or piping system provides water used exclusively for these automatic sprinklers and their related appurtenances and to standpipes connected to automatic sprinkler systems;

5. 5. The construction, installation, maintenance, repair, renovation, and/or removal of pipe or piping systems and related mechanical appurtenances including backflow preventers, appliances and/or equipment used in connection therewith, directly or indirectly within or without any building or structure, from a point or location in a source of potable water supply at which point or location there exists any backflow preventer, provided that said pipe and/or piping systems are for:

   1. a. heating, except radiant-floor heating systems as defined in subparagraph d of paragraph 9 of Section 1003 of this title,
   2. b. cooling,
   3. c. air conditioning,
   4. d. refrigeration, or

   5. e. boilers and other pressure vessels of whatsoever kind and character.

      A "backflow preventer," as used herein, means any permanent mechanical device, or combination of permanent mechanical devices, of whatever material, which, after installation acts to prevent a reversal of the normal directional flow of potable water within the piping system in which it is installed, and shall include, but not be limited to, metal checkvalves and airgaps, either naturally or artificially created. Provided, further, that the exclusionary provisions of this paragraph shall apply only to and within governmental agencies, counties, cities and towns which now have or which hereafter may adopt separate laws relating to the licensing, registration and regulating of persons engaged, for business purposes, in any of the areas of trade hereinbefore specified in this paragraph; the exemptions herein being provided to apply only to these items specifically regulated by any such local laws and ordinances; and

6. 6. An individual who performs plumbing work on such individual's property of residence.

Laws 1955, SB 168, p. 370, § 17; Amended by Laws 1965, SB 344, c. 147, § 1, emerg. eff. May 24, 1965; Amended by Laws 1967, SB 240, c. 361, § 1, emerg. eff. May 22, 1967; Amended by Laws 1996, HB 2250, c. 318, § 1, emerg. eff. July 1, 1996; Amended by Laws 2004, SB 1211, c. 163, § 3, emerg. eff. April 26, 2004 (superseded document available).