A main water shutoff valve usually uses a lever operating a ball valve to easily shut down the incoming water for the entire house. In the case of a leak, it's essential to know where the main water ...

It may have a wheel-style circular handle or a gate valve lever-style handle. It’s often located within a few feet of where the water supply line enters the house. Didn't find it so easily?

It would be a shame to have to deal with water damage after such an easy fix. Most old valves have rust and mineral deposits in the receiving groove. That crud can jam the gate and damage the valve.