How to Shut Off the Water to a Sink Faucet

1. Look for two chrome-plated or plastic stop valves under the sink, usually at the back of the cabinet. These are connected to the water supply tubes that serve the faucet—one for cold, and the other for hot. The cold is usually on the right-hand side.
2. To shut off a single-handle faucet, you will need to turn off both. Turn the valves clockwise to turn them off.