“Building drain” means the part of the lowest horizontal piping of a drainage system that receives the discharge from soil, waste, and other drainage pipes inside the walls of a building and conveys it to the service connection beginning 5 feet outside the inner face of the building wall.

Source. #2707, eff 5-15-84, EXPIRED: 5-15-90 New. #4845, eff 6-20-90, EXPIRED: 6-20-96 New. #6304, eff 7-26-96; ss by #8124, INTERIM, eff 7-26-04, EXPIRES: 1-22-05; ss by #8235, eff 12-22-04 (See Revision Note at chapter heading for Env-Wq 1200) (formerly Env-Ws 1202.04); ss by #9798-A, eff 10-9-10; ss by #12739, eff 3-19-19