Few things can cause panic faster than a burst pipe or major plumbing leak. When water is spilling onto floors, walls, or furniture, every second matters. Knowing where your home's main water shutoff valve is located can help prevent costly damage and give you peace of mind. What Is a Main Water Shutoff Valve? Your main water shutoff valve controls the flow of water into your entire home. Turning this valve off stops water from entering the plumbing system, which can be criti