Before Leaving Town, Don’t Forget Your Main Shut Off Valve
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Published September 23, 2024 | Updated June 9, 2026
If you’re leaving town for vacation, one of the smartest steps you can take is shutting off your home’s main shut off valve. Doing so can help prevent expensive water damage from leaks, burst pipes, and plumbing failures while you’re away. This guide explains where to find your main shut off valve, how to turn it off safely, the difference between gate valves and ball valves, and what to expect when you turn your water back on.
Leaving town can be exciting, but it’s often accompanied by a long list of responsibilities that can add to the stress. In addition to packing, arranging for pet sitters, and pausing your mail service, there’s one crucial yet simple task many homeowners overlook: turning your water shut off valve.
This simple step can save you from coming back to a plumbing disaster.
The Risks of a Water Leak While You’re Away
Water leaks are never convenient, but when they happen while you’re away, they can be especially destructive. Your home’s water supply is under constant pressure, meaning that even a small, unnoticed leak can cause significant damage in just a few hours. Left unchecked for days, that damage can multiply exponentially, leading to costly repairs.
When you’re home, you can catch leaks early. But when you’re away, you risk returning to find floors, walls, or even entire rooms ruined by water damage. Turning off your water supply before you leave town is an easy and effective way to avoid this scenario.
How Long Should You Be Gone Before You Turn Your Water Shut Off Valve?
There is no universal rule, but many homeowners choose to turn their water shut off valve whenever they will be away from home for several days or longer. Summer vacations, holiday travel, work trips, and extended weekends are all situations where shutting off the water can provide additional peace of mind.
Some homeowners even make it part of their regular departure checklist alongside locking doors, adjusting the thermostat, and stopping mail delivery. If a leak develops while nobody is home to notice it, even a small plumbing problem can cause significant damage before anyone discovers it.
If you have questions about whether shutting off the water is appropriate for your specific plumbing system, a plumber can help you evaluate your home’s setup and identify any special considerations.
Leaving Town Soon?
Before your next vacation, make sure you know where your main water shut off valve is located and that it operates properly. If you are not sure where it is, if the valve is difficult to turn, or if you have an older gate valve that you do not trust, Aaron Services can help inspect, locate, repair, or replace your shut off valve before it becomes an emergency.
Peace of Mind While You’re Away
Before your next vacation, make sure you know where your main water shut off valve is and that it works properly. If you’re not sure, Aaron Services can help before you head out.
For those who want extra peace of mind, smart water shut-off devices are a great option. One example is the Moen Flo, a smart system that can detect leaks and automatically shut off your water to prevent further damage. These devices are ideal for homeowners who travel often or want added security. Many insurance companies even offer discounts for installing these systems because they know how quickly water damage can escalate.
A smart shut-off system continuously monitors water usage, identifying any irregularities. Whether it’s a minor drip or a major burst, these systems can act instantly, even sending notifications to your phone. It’s a sophisticated solution for modern homeowners who want to prevent water damage before it happens.
The Free and Easy Alternative: Use Your Main Water Shut Off Valve
If you’re looking for a free and simple alternative, manually turning off your home’s water supply is a great option. By shutting off the water and draining your pipes, you relieve the pressure on your system and eliminate the risk of leaks while you’re away.
Here’s how to do it:
Step-by-Step Guide to Turning Off Your Water
For those unfamiliar with the process, here’s a step-by-step guide:
Find your main shut-off valve. It’s typically located near where your main water line enters your home. This could be in your basement, utility room, or garage. If you’re struggling to locate it, a plumber can help you find it. The plumber can also confirm whether the valve is in good working order.
Turn off the valve. Most modern homes have a ball valve that is easy to turn. Simply rotate the valve clockwise to shut off the water supply.
Drain your pipes. Open a few faucets to release any water still sitting in your pipes. This will remove the pressure and ensure no water can leak.
Check that the water is off. Try turning on faucets around your home to ensure no water comes out. This confirms the water is shut off completely.
Knowing how to turn off your main water supply can also be handy if you get an unusually high water bill or notice your water meter spinning without water usage.
An Important Caution: Be Aware of Your Shut-Off Valve Type
Not all shut-off valves are the same. If your home is older, you may have a problematic main shut off valve. Take a look ahead of time so that you aren’t learning about the different types of shut off valves during an emergency.
Gate Valves
A gate valve is a type of valve used to control the flow of water in plumbing systems by lifting or lowering a metal gate inside the valve body. It works by rotating a round handle, often wheel-shaped, which raises the gate to allow water flow or lowers it to block it. Gate valves can often be identified by their tall, rectangular shape, and the need to turn the handle multiple times to fully open or close the valve.
These valves are more common in older homes but can become problematic over time, as they tend to get stuck after years of use, either in the open or closed position. While a stuck open valve is inconvenient, a stuck closed valve can be a bigger problem, preventing you from restoring water when you return home. In an emergency, a gate valve that is stuck open can also be a major problem. With a gate valve stuck open, you won’t be able to stop a bad leak from turning into a flood.
Ball Valves
Newer systems usually replace gate valves with ball valves, which are easier to operate and more reliable. A ball valve is a type of shut-off valve that controls water flow using a rotating ball with a hole through its center. When the valve handle is turned 90 degrees, the ball rotates, aligning the hole with the water pipe to allow flow, or blocking it to stop the flow. Ball valves are easily identified by their lever handle, which turns in one swift motion—parallel to the pipe when open and perpendicular when closed. They are highly reliable, providing a quick, full shut-off with minimal effort.
The main shut-off valve is one of the most important components of your plumbing system. It’s your first line of defense against leaks and burst pipes. If it’s old or unreliable, you could be facing a serious issue when you need it most. Proactively replacing it can save you a lot of stress and expense in the long run.
Every Homeowner Should Know Where Their Main Water Shut Off Valve Is
Every homeowner should know where their main water shut-off valve is located. It’s a critical part of homeownership that can save you from major water damage. Typically, the valve is found where the main water line enters the home, which could be in your basement, garage, or utility room. If you’re unsure of its location, or if you can’t find it, it’s important to have a plumber help you locate and inspect it.
At Aaron Services, we offer a Plumbing Comfort Club Membership, which includes locating your visible shut-off valves and making sure they’re in good working order. Having this peace of mind means you won’t be scrambling to find the valve during an emergency.
What to Expect When You Turn Your Water Back On
When you return home, turning the water back on is as simple as reversing the steps you took to shut it off. However, don’t be alarmed if you notice some sputtering or unexpected noises from your faucets. This is just air being pushed out of your pipes as water flows back in. It’s completely normal and should clear up after a few minutes of running the water.
Here’s what to do:
Turn the main valve counterclockwise to restore the water supply.
Open faucets slowly to let the air escape. You might hear a bit of sputtering or notice bursts of water, but this is just the air being forced out.
Check your fixtures. Run water from several faucets to ensure everything is back to normal.
The next time you leave town, you can do so with peace of mind brought to you by Aaron Services: Plumbing, Heating, Cooling. And don’t worry! If you’re not sure where your main shut off valve is, or if you have an older gate valve that you don’t trust, give us a call. We’re happy to help you with any plumbing or HVAC issue, and love to educate our customers.
Do You Know Where Your Main Shut-Off Valve Is?
Many homeowners don’t think about their main shut-off valve until there’s a plumbing emergency. Knowing where it is and making sure it works properly can save valuable time when every second counts.
Should I turn off my water before going on vacation?
Yes. If you’re leaving town for several days or longer, turning off your home’s main water shut off valve can help prevent costly water damage from leaks, burst pipes, or plumbing failures while you’re away.
Where is my main water shut off valve located?
Your main water shut off valve is typically located near where the main water line enters your home. This may be in a basement, garage, utility room, or another area near the front of the home. If you are not sure where it is, a plumber can help locate it and confirm that it works properly.
How do I turn off my main water shut off valve?
To turn off the water, locate the main shut off valve and close it. Most modern ball valves turn 90 degrees so the handle is perpendicular to the pipe. Older gate valves usually require several clockwise turns. After shutting off the valve, open a few faucets to drain the remaining water and relieve pressure in the pipes.
What is the difference between a gate valve and a ball valve?
A gate valve uses a round handle that turns multiple times to raise or lower a gate inside the valve. These are common in older homes and can become stuck over time. A ball valve uses a lever handle that turns 90 degrees and is generally easier to operate and more reliable.
What should I expect when I turn my water back on?
When you turn the water back on, you may hear sputtering or noises from your faucets as air leaves the pipes. This is normal and should clear after running the water for a few minutes. Turn the valve back on slowly, open faucets gradually, and check fixtures to make sure everything is working normally.
