Water Damage Guides · Water Damage Basics

How to Shut Off Your Water in an Emergency

Knowing how to shut off your water is one of the simplest and most useful things a homeowner can learn, and it costs nothing. A burst pipe, a failed supply hose or a leaking appliance can put a large amount of water into a house in minutes, and the difference between a small mess and a major loss is often a single valve. If you know where it is and that it turns, you can stop the water in seconds. If you do not, you will be searching for it while the water spreads.

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This guide explains, in general terms, how to find the main shut-off before an emergency, how to turn it off safely, what to do if you cannot find it, and when to call a professional. It applies to homes in Lake Charles and Monroe as much as anywhere else in Louisiana. The emergency water removal page explains what happens after the water is stopped.

Locate the main shut-off in general terms before an emergency

The main shut-off valve is usually where the water line enters the house, and the most common places are near the water meter, in a utility area, in a garage, or along an outside wall. In many Louisiana homes it is outside, near the meter, or in a utility closet. It may be a wheel-shaped handle, a lever, or a round knob. Walk through your home on a dry day and find it. Follow the water line from the meter to the house if you can, and look for the first valve on that line. Once you have found it, make sure everyone in the household knows where it is.

There are also smaller shut-off valves for individual fixtures: under sinks, behind toilets, and on the supply lines to washing machines, dishwashers and water heaters. These let you stop the water to one fixture without shutting off the whole house, which is useful for a small leak. Find those too, and check that they turn. A valve that has seized up from years of sitting still is no use in an emergency, so turn each one gently once a year to keep it working. If a valve will not turn, do not force it; note it and have it looked at.

Shut it off if safe to do so

To shut off the main valve, turn it clockwise until it stops. A lever handle is turned so that it sits across the pipe rather than along it. Once the water is off, open a tap at the lowest point in the house to drain the remaining water from the pipes, and open a tap at the highest point to let air in. This reduces the pressure in the system and limits how much more water can escape from a burst pipe or a failed fitting. The taps will run briefly and then slow to a drip, which is normal.

Shut the water off only if it is safe to do so. If the valve is in a flooded area, or you would have to cross standing water to reach it, do not go. If the valve is near a wet electrical panel, leave it alone. Safety comes before the valve. If you cannot shut the water off safely, call a professional and say so; they can advise you on what to do next. The burst pipe water damage repair page covers what happens after a burst pipe is stopped.

How to Shut Off Your Water in an Emergency — Louisiana water damage guide

What to do if you cannot find it

If you cannot find the main shut-off, there are a few places to check. Look near the water meter first, then in the utility area, the garage, and along the outside walls of the house. Look for a valve on the pipe that enters the house from the street. If the house is on a raised foundation, the valve may be under the house, and that is not a place to go looking during an emergency. If you still cannot find it, call a professional or your water utility and ask where it is. They can tell you, and it is better to ask on a dry day than in the middle of a flood.

If water is coming in now and you cannot find the shut-off, focus on safety and on protecting what you can reach from dry ground. Move belongings away from the water, keep clear of electrical items in standing water, take photographs, and call for help. Do not open walls or floors to look for a valve, and do not try to cut a pipe to stop the flow. A professional can find the shut-off and stop the water, and the sooner you call, the sooner that happens.

Call a professional

Once the water is off, or once you know you cannot safely turn it off, call a water damage restoration professional. Describe what happened in plain terms: where the water is coming from, how much water you can see, which rooms are affected, and whether you were able to shut the water off. A professional visit generally starts with an inspection, then water removal, then drying, and the visit is shaped by what the inspection finds. Ask what the visit covers and what you should do while you wait.

For homes in New Orleans and Baton Rouge, as across Louisiana, the advice is the same: find the valve before you need it, check that it turns, shut it off only if it is safe to do so, and call for help if you cannot find it or cannot reach it safely. The water damage restoration page describes the general sequence that follows once the water is stopped. A valve you can find in the dark is worth more than any other preparation you can make.

Labelling the valves

Once you have found the main shut-off valve, label it. A small tag, a piece of tape with a note, or a label on the wall beside it is enough, and it is worth doing because in an emergency you will not be thinking clearly, and a label is faster than a memory. Label the smaller valves too: under the sinks, behind the toilets, and on the supply lines to the washing machine, the dishwasher and the water heater. A household where everyone knows where the valves are is a household where the water can be stopped in seconds, not minutes.

Teach everyone in the household where the main valve is and how to turn it, including older children. Walk through it once on a dry day, so the knowledge is in their hands as well as in yours. If the valve is outside, make sure the path to it is clear and that it is not buried under plants or stored items. For homes in Shreveport and Lafayette, the burst pipe water damage repair page covers what happens after a burst pipe is stopped, and a labelled valve is the preparation that makes the stopping possible.

Key Takeaways

The main shut-off valve is usually where the water line enters the house, and the most common places are near the water meter, in a utility area, in a garage, or along an outside wall.
To shut off the main valve, turn it clockwise until it stops.
If you cannot find the main shut-off, there are a few places to check.
Once the water is off, or once you know you cannot safely turn it off, call a water damage restoration professional.
Once you have found the main shut-off valve, label it.

Questions About How to Shut Off Your Water in an Emergency

Where is the main water shut-off valve usually located?

Usually where the water line enters the house: near the water meter, in a utility area, in a garage, or along an outside wall. In many Louisiana homes it is outside near the meter or in a utility closet. Walk through your home on a dry day and find it before you need it.

How do I turn off the main water valve?

Turn it clockwise until it stops. A lever handle is turned so it sits across the pipe rather than along it. Then open a tap at the lowest point in the house to drain the pipes, and a tap at the highest point to let air in.

What if the shut-off valve will not turn?

Do not force it. A valve that has seized up from years of sitting still may need to be looked at by a professional. Turn each valve gently once a year to keep it working, and note any valve that will not turn.

What if I cannot find the shut-off valve during an emergency?

Focus on safety and on protecting what you can reach from dry ground. Keep clear of electrical items in standing water, take photographs, and call a professional or your water utility. Do not open walls or floors to look for a valve.

Your Next Step

If this guide matches what you found at home, the next step is a visit — not a guess. Call and describe what you found, and the visit is arranged from what you describe. The Emergency Water Removal page explains what that service covers, and the water damage restoration page explains how the full sequence works when water has reached more than one room.

Do not enter flooded rooms while you wait, and if water is leaking, turn off the shut-off valve for that fixture where you can reach it safely from dry ground.

Keep the guides on this site bookmarked: the first guide, the signs guide, and the preparation guide cover the checks worth repeating — after moving in, and after bringing used fixtures home.

Water damage help is available across Louisiana. See water damage restoration in Oak Grove, Gonzales, LA for one local example, or find your town on the service areas page.