Step 3 · Disconnect Water Supply Lines
Position your bucket underneath the hot and cold water supply line connections. Using a basin wrench or an adjustable wrench, turn the coupling nuts counter-clockwise to loosen them from the faucet inlets. A basin wrench is specially designed for this type of tight, hard-to-reach location. Once the nuts are loose, you can usually unscrew them by hand. Be prepared for a small amount of water to drain into the bucket.