Only drains that cannot be discharged to the sewer by gravity flow shall discharge into an approved watertight, gas-tight vented sump or receiving tank, so located as to receive the sewage or wastes by gravity. From the sump or receiving tank the sewage or other liquid wastes shall be lifted and discharged into the building gravity drain by approved automatic pumping equipment. The system or drainage piping entering the sump shall be installed and vented as required in this section for a gravity system.
9 SR 1557; L 2007 c 140 art 6 s 15; art 13 s 4; 33 SR 2042
May 14, 2012
Official Publication of the State of Minnesota
Revisor of Statutes