When the subsoil drain for a building is subject to backwater, it shall be protected by an accessibly located backwater valve. Subsoil drains may discharge into a properly trapped area drain or sump. Such sumps do not require vents. (See parts 4715.2430 and 4715.2440.)
L 2007 c 140 art 6 s 15; art 13 s 4
May 14, 2012
Official Publication of the State of Minnesota
Revisor of Statutes