Drain Clog—How to Find It

Drawing of a house’s drain-waste-vent system including blue-colored vent pipes.

If your toilet won’t flush, shower backs up, or sink won’t drain, the problem is likely a clogged drain. In this troubleshooting article, we’ll show you how to figure out where the clog or problem is located and give you expert advice on how to clear it. Understanding a typical house’s drain system is an […]