
Backwater Valve Installation: A Homeowner’s Guide
You come home from a long weekend and find the basement floor drain burping, the cleanout cap displaced, and sewage spread across the concrete. In the Lower Mainland, that kind of backup can start with a municipal surcharge, a blockage, or stormwater pressure that forces wastewater the wrong way through the building sewer. A backwater valve can provide a passive barrier, but only when it's selected, installed, and maintained for the actual plumbing layout. The decision starts with one question:








