The California Plumbing Code is amended and changed in the following respects:
A. Chapter 604 (Materials) is amended and changed in the following respects:
Section 604.14 - Metal water piping. Metal water piping, including any repair of any metal water piping, is not to be permitted buried under any structure except as permitted in individual circumstances and approved by the building official.
B. Chapter 710 (Drainage of Fixture Located Below the Next Upstream manhole or Below the Main Sewer Level) is amended by adding Section 710.1 - (Sewage backwater). Section 710.1 (Backflow Protection) is added to read as follows:
Section 710.1 - Sewage backwater. Where a fixture is installed on a floor level that is lower than the next upstream manhole cover of the public or private sewer, serving such drainage piping, such fixtures shall be protected from backflow of sewage by installing an approved type of backwater valve or mushroom type device or other fixtures approved by the building official. Fixtures on floor levels above such level elevation shall not be discharged through the backwater valve. Cleanouts for drains that pass through a backwater valve shall be clearly identified with a permanent label stating “Backwater Valve Downstream.”
(Ord. 2019-08 § 3 (part), 2019)