As used in this chapter:
(1) “Apprentice plumber” means any person other than a journeyman or master plumber who is engaged in learning and assisting in the installation of plumbing and drainage and enrolled in a state-approved apprentice program;
(2) “Approved backflow preventor” means any permanent mechanical device or combination of permanent mechanical devices of whatever material that after installation according to the state plumbing regulations acts to prevent a reversal of the normal directional flow of potable water within the piping system in which it is installed;
(3) “Board” means the State Board of Health;
(4) “Department” means the Department of Health;
(5) “Final year of apprenticeship” means when an apprentice plumber has obtained four hundred eighty (480) hours or more of classroom instruction and completed six thousand (6,000) or more hours of on-the-job work in an approved United States Department of Labor apprenticeship program;
(6) “Gas utility serviceperson” means an employee of a gas utility specially trained for gas service work with the utility;
(7) “Journeyman plumber” means any person other than a master plumber who is engaged in the practical installation of plumbing;
(8) “Master plumber” means any person skilled in the planning, superintending, and practical installation of plumbing and familiar with the laws and rules governing it;
(9) “Plumbing” means:
(A) All piping, fixtures, appurtenances, and appliances:
(i) In connection with a supply of water within or adjacent to any building, structure, or conveyance on the premises and to the connection with a utility water meter or other public water utility property or other source of supply;
(ii) For sanitary drainage or storm drainage facilities, including venting systems for facilities, within or adjacent to any building, structure, or conveyance and connected with a public disposal or private disposal system or other point of disposal; or
(iii) Used in the installation of natural gas; and
(B) The installation, repair, maintenance, and renovation of all piping, fixtures, appurtenances, and appliances for a supply of water or for the disposal of waste water, liquid waste, or sewage within or adjacent to any building, structure, or conveyance on the premises and to the utility water meter or other public utility property or point-of-disposal waste; and
(10) “Restricted plumber” means a person qualified to install building water or sewer lines or other special phases of plumbing if the person has demonstrated competency for that particular phase of plumbing.