To obtain a license, an individual must have:(1) met the requirements in Subchapter A of this chapter (relating to Administration of Occupational Licenses and Registrations);(2) passed an examination;(3) received a high school diploma or equivalent certificate;(4) completed an approved 40-hour backflow prevention assembly testing training course; and(5) worked at least two years in an approved area which includes, but is not limited to:(A) operating or maintaining a public drinking water system;(B) installing or repairing residential, commercial, or industrial drinking water treatment equipment;(C) installing or repairing lawn irrigation systems;(D) performing activities requiring a master or journeyman plumbing license;(E) installing or servicing fire suppression sprinkler systems and lines;(F) operating or maintaining a domestic wastewater treatment facility;(G) performing health inspections that requires a registered sanitarian; or(H) performing other duties approved by the executive director.(6) An individual may substitute one year of the required experience with:(A) one year of college credit (32 semester hours); or(B) 20 hours of approved training in addition to the required 40-hour backflow prevention assembly testing training course.