715. BACKWATER VALVES

715 BACKWATER VALVES Strike Section 715.1 of the International Plumbing Code in its entirety and insert a new Section 715.1 into the Plumbing Code in its place to read as follows: 715.1 Sewage backflow. Where plumbing fixtures are installed on a floor with a finished floor elevation below the elevation of the manhole cover of the next upstream manhole in the public sewer, such fixtures shall be protected by a backwater valve installed in the building drain or horizontal branch serving such fixtures, or shall discharge to a sump complying with Section 712.3 and served by a sewage pump or ejector complying with Section 712.4. Plumbing fixtures installed on a floor with a finished floor elevation above the elevation of the manhole cover of the next upstream manhole in the public sewer shall not discharge through a backwater valve or a sump. This section shall not apply to replacement in kind of compliant plumbing fixtures. Exception: Where the code official deems it appropriate for the protection of existing multi-level buildings in flood prone areas, the retrofitting of backwater valves to be installed in the building drain or in a horizontal branch serving fixtures on a floor with a finished elevation above the adjacent manhole in the public sewer shall be allowed, thereby allowing such fixtures to discharge through the backwater valve. SOURCE: Final Rulemaking published at 67 DCR 6148 (May 29, 2020 – Part 2). The District of Columbia Plumbing Code (2017), referred to as the “Plumbing Code,” consists of the 2015 edition of the International Plumbing Code (International Plumbing Code), published by the International Code Council (ICC), as amended by the Plumbing Code Supplement of 2017 (12-F DCMR). The International Plumbing Code is copyrighted by the ICC and therefore is not republished here. However, a copy of the text may be obtained at: https://codes.iccsafe.org/public/document/IPC2015. District of Columbia Municipal Regulations Plumbing Code Supplement of 2017 12-F DCMR § 715