All plumbing shall be designed, installed, and maintained in accordance with the requirements of the Illinois Plumbing Code (77 Ill. Adm. Code 890) except where that Code and these requirements differ. For areas of difference, see Subpart T and Subpart U.
Ill. Admin. Code tit. 77, § 250.1970
Amended at 5 Ill. Reg. 507, effective December 29, 1980