No person shall use unsafe or defective material in the work of plumbing or drainage. Only the best known methods of installing materials, fixtures, appurtenances and appliances, including water supply piping, waste, ventilating and soil piping, and sewage piping shall be employed.
KRS 318.150
Amended 1960 Ky. Acts ch. 222, sec. 21, effective6/16/1960. --Recodified 1942 Ky. Acts ch. 208, sec. 1, effective 10/1/1942, from Ky. Stat. sec. 3909b-3.