Here are the steps to turn off the water supply:
1. Locate the main water shut-off valve. This valve is usually located near the water meter or in a utility room. If you cannot find the main shut-off valve, contact a plumber. 2. Turn the shut-off valve clockwise to close it. Use a wrench or pliers to turn the valve if it is difficult to turn by hand. 3. Once the shut-off valve is closed, open a faucet to release any remaining water pressure in the pipes. This will help prevent damage to the pipes when the water is turned back on. 4. Contact a plumber to repair any leaks or damage to the water supply system.