How to Turn Off the Water to Your House

Published September 23, 2024 | Updated September 22, 2026

To turn off the water to your house, locate the main water shut-off valve where the water supply enters your home. Close a round gate valve by turning it clockwise, or close a lever-style ball valve by turning the handle one-quarter turn until it is perpendicular to the pipe. Open a faucet to confirm the water is off. If the main shut-off valve will not close, your water provider may be able to shut off the supply at the meter.

How to Turn Off the Water to Your House, Step by Step

Knowing how to shut off water to your house is useful during a plumbing leak, before certain repairs, and anytime you want to protect an unoccupied home.

If water continues flowing normally, the valve may not be fully closed or may no longer be shutting off properly.

Where Is the Main Water Shut-Off Valve Located?

If you’re asking, “Where is the main water shut off valve in my house?” start by figuring out where the main water line enters the building.

In North Atlanta, don’t assume you’ll find it in a basement. Many homes are built on slabs or have crawlspaces. Check the garage, crawlspace, utility area, and the wall near the water heater first. Depending on the home, the valve may be close to an exterior wall where the water service enters.

If you do have a basement, look along the foundation wall facing the street or the direction of the water meter. You’re looking for the main supply pipe entering the house with a valve installed on it.

Your street-side meter box can also give you a clue. Imagine a reasonably direct path from the meter toward the house and look for the indoor shut-off near the point where that line enters.

Every homeowner should know where this valve is before water starts running across a floor. Aaron Services’ Plumbing Comfort Club membership includes locating visible shut-off valves and checking their operation, which is a good opportunity to make sure everyone in the household knows where the main valve is.

If you are troubleshooting unexplained water use rather than an active leak, the main valve can also help you investigate a high water bill or a water meter that keeps spinning when no water should be running.

What Does a Main Water Shut-Off Valve Look Like?

Most residential main shut-off valves fall into two easily recognizable categories.

An older gate valve usually has a round or wheel-shaped handle. You turn the wheel several times to move an internal gate up or down. Clockwise closes it; counterclockwise opens it.

A ball valve has a straight lever handle. When the handle is parallel with the pipe, the valve is open. Turn the lever 90 degrees so it sits perpendicular to the pipe, and the valve is closed.

That distinction matters in an emergency. A ball valve can usually be shut with one quick quarter-turn. An older gate valve may take several turns and, if it has not been operated in years, may be difficult to move.

How to Turn the Water Off From Outside at the Meter

If the main water shut-off valve inside your house fails, there is usually another shut-off on the utility side near the water meter.

The meter is typically inside a covered box near the street or property line. Inside, you may see the meter and a curb stop, which controls the water coming from the utility supply toward your home.

Operating that valve may require a water meter key, sometimes called a curb key. The long handle lets you reach the valve inside a deeper meter box and turn it without trying to work in a tight space.

Before you do that, check your local water provider’s rules. Some utilities do not allow homeowners to operate the utility-owned street-side shut-off themselves. If your indoor valve will not close and you are unsure whether you are allowed to use the curb stop, call your water provider.

If water is actively leaking and your interior main valve will not stop it, tell the utility that you need the water shut off because of a plumbing emergency.

Gate Valves vs. Ball Valves — and What to Do if Yours Won’t Turn

Gate valves and ball valves do the same basic job, but they work very differently.

A gate valve controls water by raising or lowering a metal gate inside the valve body. The round handle must be turned several times to fully open or close it. Gate valves are common in older plumbing systems, and age is where they can become troublesome.

After years of sitting in one position, a gate valve may become difficult to operate. It can stick open, fail to close completely, or get stuck closed after you finally move it.

Never force a stuck gate valve. The stem connecting the handle to the internal mechanism can break. If you snap that stem while trying to shut off the water, you have turned an unreliable shut-off valve into an immediate plumbing problem.

A ball valve uses a rotating ball with an opening through its center. Moving the lever 90 degrees rotates that opening either in line with the pipe or across it. The design provides a fast, positive shut-off with very little movement.

For that reason, ball valves are generally preferred when an old main shut-off valve is replaced.

If your valve is badly corroded, leaks around the stem, will not move with reasonable hand pressure, or fails to stop the water completely, have it repaired or replaced rather than waiting for the next emergency to test it again.

Should You Drain the Water From Your Pipes?

You don’t always need to.

When you close the main valve and then open faucets, you relieve the pressure in the plumbing and allow some of the standing water in the supply lines to drain. A depressurized, mostly empty line has far less water available to escape if something fails. That is the appeal of draining the system.

But draining also introduces air into the piping. When you restore the water, faucets may sputter, you may briefly see discolored water, and you can sometimes get noise or air hammer while the system refills. Sediment that gets disturbed can also end up in a faucet aerator, leaving you wondering why one sink suddenly has weak flow.

Those are usually inconveniences rather than damage.

For a normal trip away, shutting off the main is generally enough. Once that valve is closed, the house no longer has a continuous supply of pressurized water feeding a leak. Fully draining the lines adds more value if the house will be empty for several weeks or if freezing is a concern.

That second situation matters in Georgia more than people sometimes expect. We don’t have months of hard freezes, but January cold snaps can still damage exposed plumbing. Pipes in an unheated crawlspace, exterior hose bibs, and irrigation piping deserve particular attention.

Be much more careful with the water heater. Do not drain a tank-style water heater while its gas burner or electric heating elements are operating. An electric element can be damaged if it heats without being submerged. If the water heater could be drained, switch it to its appropriate vacation/VAC setting or turn it off first according to the manufacturer’s instructions.

For most homeowners leaving for an ordinary vacation, we would shut off the main and leave the plumbing full. For an extended absence or a house exposed to freezing temperatures, draining deserves a closer look.

How to Turn the Water Back On

Turning the water back on is mostly the reverse of shutting it off, but take your time.

First, if you drained any part of the plumbing system, make sure the water heater is ready to be refilled and that its heat source is not operating while the tank is empty.

Then slowly reopen the main valve. Turn a gate valve counterclockwise or rotate a ball-valve lever until it is parallel with the pipe.

Open faucets gradually. Air trapped in the pipes will escape as water returns, so sputtering, spurts of water, and some plumbing noise are normal at first. Let each fixture run until you have a steady stream.

If an aerator suddenly has poor flow, debris disturbed during repressurization may have collected in the screen. Removing and rinsing the aerator may solve the problem.

Finally, walk through the house after full pressure has returned. Look under sinks, around toilets, at appliance supply lines, and anywhere you have disturbed the plumbing. A fitting that was dry with the system depressurized can reveal a slow drip once normal pressure returns.

Leaving Town? What to Shut Off Before You Go

If you’ll be gone for a few days or longer, shutting off the main water supply is worth considering. A washing-machine hose, toilet supply line, refrigerator connection, or other plumbing failure can release a great deal of water when nobody is home to notice it.

For a typical trip, you usually do not need to completely drain the plumbing. Close the main valve, verify that it actually stopped the water, and deal separately with any exterior plumbing that could be exposed to freezing temperatures.

Your water heater also deserves attention before an extended absence. Follow the manufacturer’s instructions for vacation mode or shutdown rather than draining it casually.

We cover the vacation question, including what else you should consider before leaving, in our guide to should you turn off the water when you go on vacation.

Smart Water Shut-Off Valves: Protection Without Turning Anything Off

Some homeowners don’t want to shut off their water every time they leave.

Maybe you have an ice maker and refrigerator line, irrigation that needs to run, a pet sitter coming into the house, or you just want your plumbing to function normally while you’re away. In that situation, an automatic water shut-off system offers a different approach.

A smart shut-off device is installed directly on the main water line. It continuously monitors water use and can recognize unusual patterns, such as water flowing much longer than expected. Depending on the system and settings, it can alert you and automatically close the main valve when it detects a potentially serious problem.

The Moen Flo Shutoff is one example. It monitors flow rate and water pressure, sends alerts to your phone, can automatically shut off the water after certain critical alerts, and performs an automatic daily MicroLeak test that temporarily closes the valve and checks for pressure loss in the plumbing.

That daily test can detect extremely small leaks. Moen says its MicroLeak technology can identify leakage down to approximately one drip per minute.

The practical advantage is that you don’t have to choose between having water and having protection. Your water stays on for normal household use, while the system watches the plumbing around the clock. That also means the protection isn’t limited to the one or two weeks you’re on vacation. A manual shut-off only protects the house when you remember to use it.

Some homeowners insurance carriers offer discounts or incentives for qualifying automatic shut-off systems. Ask your carrier whether yours does and what equipment qualifies before purchasing a device.

These systems are especially worth considering for frequent travelers, second homes, houses with upstairs laundry rooms, homes with finished basements, and homeowners who have already experienced a significant water loss.

Aaron Services installs these systems. Learn more about our automatic water shut-off valve services.

Who Is Responsible for Replacing a Main Water Shut-Off Valve?

The dividing line is usually ownership.

The main shut-off valve on your home’s plumbing is the homeowner’s responsibility. If the valve inside the house leaks, becomes stuck, or needs replacement, you would normally call a plumber.

The water meter and utility-side curb valve belong to the water utility. Don’t replace, modify, or attempt to repair those components yourself. If there is a problem with the meter or the utility’s shut-off, contact your water provider.

There can be differences between utilities in exactly where responsibility changes from the public water system to the homeowner’s service line. If the failed component is near the meter and you’re not sure whose responsibility it is, call the utility first.

Frequently Asked Questions