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When a pipe bursts, every second counts, and the fastest way to stop the flood is to shut off the water to your whole house. Find the main shut-off valve, either inside where the water line enters or outside at the meter box, and close it. Learning how to shut off water to house lines before an emergency saves you a soaked floor. Our 24/7 emergency plumbers are one call away once the water is off.
How to Shut Off Water to House: Key Takeaways
- Find the valve now, not later. In a burst-pipe emergency you will not have time to search.
- Two common spots. Inside near where the line enters, or outside at the meter box near the street.
- Ball valve: quarter turn. Turn the lever 90 degrees so it sits across the pipe.
- Gate valve: turn the wheel clockwise. Keep turning until it stops.
- Drain the lines after. Open a low faucet to relieve the remaining pressure.
Step 1: Find Your Main Shut-Off Valve
Your main valve is almost always in one of a few predictable places. Walk your home now and find it, so you are not hunting while water pours across the floor.
- Inside the house. Look in the basement, crawl space, garage, or near an exterior wall where the main line enters, often at the front of the home.
- At the water meter box. In warmer climates like ours, check the underground meter box near the curb or sidewalk. There is a valve on the house side of the meter.
- Near the water heater. Sometimes the main runs past the water heater, so check there too.
- Follow the line. If you are stuck, trace the pipe from an outdoor spigot back toward where it enters the house.
Step 2: Close the Valve the Right Way
There are two common valve types, and each closes differently. Knowing which you have saves fumbling in a crisis.
| Valve type | What it looks like | How to close |
|---|---|---|
| Ball valve | A straight lever handle | Turn the lever a quarter turn, across the pipe |
| Gate valve | A round wheel handle | Turn the wheel clockwise until it stops |
| Meter valve | At the street meter box | Use a meter key, turn until closed |
If a gate valve is stiff from age and will not close fully, do not force it hard enough to snap the stem. Work it gently back and forth. If it still leaks by, that valve needs replacing, which is a quick job for a plumber.
Step 3: Drain the Lines and Protect the Water Heater
Shutting the valve stops new water from coming in, but the pipes are still full. A couple of quick steps finish the job.
- Open a low faucet. Turn on a faucet on the lowest floor or an outside spigot to drain the remaining water and release pressure.
- Verify the water is off. Check the leaking spot. The flow should slow to a stop as the lines empty.
- Protect an electric water heater. If the water will be off for a while, switch off the water heater at the breaker so its heating element does not run dry and burn out.
The Tools To Keep On Hand
A few cheap tools, kept where you can grab them, make an emergency shutoff fast instead of frantic.
- A water meter key. This long tool opens the meter box lid and turns the street-side valve. Keep one in the garage.
- An adjustable wrench. Useful for stiff valves and fixture shutoffs.
- A flashlight. Valves hide in dark basements and crawl spaces.
- A tag or label. Mark your main valve so anyone in the house can find it. The Ready.gov emergency prep site recommends every household know where their utility shutoffs are.
Shutting Off Water to a Single Fixture
You do not always need to shut off the whole house. For a leaking toilet or sink, each fixture has its own small shutoff valve, usually under the sink or behind the toilet. Turn it clockwise to close it, and the rest of the house keeps water. For a burst pipe or a leak you cannot find, though, go straight for the main.
Frequently Asked Questions
Can you shut off your own water to your house?
Yes. Every home has a main shut-off valve you can close yourself, usually inside near where the line enters or at the outdoor meter box. No plumber is needed just to turn it off.
Can I shut off water to just one bathroom?
You can shut off a single fixture at its own supply valve, under the sink or behind the toilet. There is rarely a valve for one whole bathroom, so for a leak you shut the fixture or the main valve.
Does shutting off the water affect the water heater?
Shutting the water off briefly is fine. If you turn it off for a long period, switch off an electric water heater at the breaker so its element does not run dry and burn out.
How do I turn off the water to my house for vacation?
Close the main shut-off valve and switch off an electric water heater at the breaker. This protects your home from a leak while you are away. The EPA Fix a Leak program notes vacations are a smart time to shut the water off.
Why Every Household Should Practice This
The worst time to learn where your main valve is, and how stiff it has become, is while water is spraying across your kitchen. A valve that has not been turned in years can seize up, and in a real emergency that delay means more water damage. Spending five minutes now to find and test your valve is one of the cheapest forms of home insurance there is.
Make it a family thing. Show everyone in the house where the main valve is and how to close it. Tag it with a bright label so there is no hunting. If you have older kids or a house sitter, a quick walkthrough means someone can act fast even if you are not home. Water does not wait for you to get back from work.
When the Valve Won’t Turn or Won’t Hold
Sometimes you find your valve and it simply will not cooperate. An old gate valve can seize, or it can close partway but still let water through. Do not force a stuck valve hard enough to snap the stem, because then you have two problems. Here is what to do instead.
- Work it gently. Turn it back and forth a little at a time to free up the stem before trying to close it fully.
- Go to the meter. If the inside valve fails, the meter box valve at the street is your backup. A meter key closes it.
- Replace a bad valve. A valve that will not hold is a safety gap. Swapping it for a modern ball valve is a quick job.
- Call for help. If water is flowing and nothing is working, get a plumber on the phone right away.
A main valve that does not work is worth fixing before you need it. Call (336) 462-1080 and we will replace it with a reliable quarter-turn ball valve you can trust in an emergency.
Water Still Flowing? Get Emergency Help Fast
If you have shut the main valve and water is still coming, or you cannot find the valve at all, do not wait. Call All-Star Plumbing at (336) 462-1080 and we will walk you through it on the phone and get a plumber to you fast. A real person answers 24/7, we give upfront pricing, and if we cannot fix it, you do not pay. We serve High Point and the Triad. For a burst line, our flood and water damage and emergency pipe repair service crews are ready, or get help now.
All Star Plumbing
4003 North Main Street, High Point, NC 27265
Phone: (336) 462-1080
NC Plumbing License #15130
