Backflow Prevention System

A Backflow Prevention System (BPS) prevents sewage from flowing back into a building should there be a blockage in the lateral or an overflow in the main sewer line. The system consists of two parts: the backwater check valve (to allow wastewater to only flow away from the structure) and the overflow device (to allow an emergency escape path for wastewater).

Oro Loma requires a BPS on all new construction; on any replacement or major repair to a lateral; in structures where the upstream manhole rim is lower than 6 inches above the lowest drain; on all structures where the property has been damaged by a blockage in the sewer main or lateral; and in existing structures when additional plumbing fixtures are installed or when the structure's floor area is increased by more than 25%.