Turn Off the Water Supply - How to Fix a Leak at a Faucet Supply Line Connection

Step 2 · Turn Off the Water Supply

Locate the water shutoff valve for the leaking supply line. This is typically a small, oval-shaped or round handle connected to a pipe coming from the wall or floor. Turn the handle fully clockwise (to the right) until it stops. If there are two valves (one for hot, one for cold), it is best practice to shut both off.