How to Shut Off Your Water in an Emergency

A pipe bursts at 11pm. A supply line under your sink lets go while you're at work. Your washing machine hose fails and water is spreading across your laundry room floor.

The difference between a $400 repair and a $12,000 water damage claim is often how fast you can get the water stopped.

Most Oklahoma homeowners have never located their main water shutoff. Most have never tested it. Some find out it doesn't work when they actually need it. This post fixes that — before you're standing in two inches of water trying to figure it out.

Step One: Find Your Main Shutoff Before You Ever Need It

Do this today, not during an emergency.

In OKC metro homes, the main water shutoff is almost always in one of four places:

1. In the garage, on the wall closest to the street. This is the most common location in OKC-area homes built from the 1970s onward. Look for a valve — either a round wheel handle or a straight lever handle — mounted on the water line where it enters the house from the foundation or through the wall.

2. In a utility closet or mechanical room near the water heater. Homes with interior utility rooms often run the main line to the water heater first, with the shutoff located at or near the point of entry.

3. In the crawl space or basement. Less common in OKC's predominantly slab-foundation homes, but if your home has a partial basement or crawl space, the shutoff may be down there.

4. Outside, in a ground-level box near the street or sidewalk. This is the utility shutoff — sometimes called the curb stop — and it belongs to OKC Water Utilities. You can use it in a true emergency, but it requires a special meter key tool to operate and should be a last resort. Your interior shutoff is the one you want to know first.

If you genuinely cannot find your main shutoff, call us. It takes a plumber about five minutes to locate and show you, and it's the kind of thing worth knowing before an emergency.

Step Two: Know What Type of Valve You Have

Once you find it, look at what type of valve it is. This matters because they operate differently.

Gate valve — looks like a round wheel or spoked handle. Turn it clockwise (right) to close. These valves were standard in OKC homes built before the mid-1990s. They work, but they have a weakness: if a gate valve hasn't been turned in years, it may be stuck, or the internal gate may be corroded to the point where it won't fully close. Gate valves that are never exercised fail when you need them.

Ball valve — looks like a lever handle. Turn it 90 degrees (a quarter turn) so the handle is perpendicular to the pipe. That's closed. Ball valves are faster to operate and more reliable after years of sitting untouched. Most homes built or replumbed after the mid-1990s have ball valves on the main.

Test yours now. Turn it off, then back on. Make sure it moves freely and that water actually stops at the fixtures when it's in the closed position. If your gate valve is stuck or won't fully close, have it replaced with a ball valve before you have a problem. A shutoff valve that doesn't shut off isn't a shutoff valve.

How to Actually Stop the Water in an Emergency

Scenario 1: A specific fixture or appliance is the problem

If the leak is clearly coming from one place — a toilet supply line, the hose bib under your sink, your washing machine, your water heater — look for the fixture shutoff first. Stopping the water at the source is faster than running to the main.

Toilet: Look for a small oval or football-shaped handle on the supply line coming out of the wall behind and below the tank. Turn it clockwise until it stops.

Sink: Look under the sink cabinet for two valves on the supply lines — one hot, one cold. Turn both clockwise.

Water heater: There's a cold-water inlet valve on top of the unit. Turn it clockwise to stop flow into the heater. This stops a leaking water heater from continuing to fill.

Washing machine: The hot and cold supply valves are usually behind the machine or in a recessed box in the wall. Turn both clockwise. If you can't reach them, go straight to the main.

Refrigerator ice maker line: A small saddle valve or inline valve on the cold water supply line, usually under the sink or in the basement. If you can't find it, main shutoff.

Scenario 2: A burst pipe inside a wall or under the slab

You hear water, you see water spreading, but you can't immediately identify a fixture source. Go straight to the main shutoff. Don't look for the source first — stop the water first, then find the source.

The sequence:

1. Main shutoff — off
2. Open a faucet on the lowest level of the house to relieve pressure in the lines and drain what's already in the pipes
3. Call a plumber
4. Document the damage with photos before cleanup
5. Call your insurance company

Scenario 3: You can't find the main shutoff or it won't turn

Go outside to the water meter box. In OKC, it's usually a rectangular plastic or concrete lid in the ground near the street, sidewalk, or front corner of the property. Lift the lid. Inside you'll see the meter and a valve. This valve typically requires a meter key — a simple T-shaped tool available at any hardware store for under $15 — to operate. If you don't have one, a pair of channel-lock pliers can sometimes turn it in an emergency. Turn it clockwise to close.

If you still can't get the water stopped, call OKC Water Utilities' emergency line. They have crews available 24 hours for main-line emergencies.

What to Do With the Water That's Already There

Stopping the water source is step one. What you do in the next 30 minutes matters for whether this stays a plumbing repair or becomes a water damage and mold remediation project.

Move fast on standing water. Water wicks into drywall, insulation, subflooring, and cabinet bases within minutes. The longer it sits, the deeper it goes.

• Use towels, mops, and a wet/dry vac to remove standing water immediately
• Pull up area rugs and move them outside — they hold moisture and go moldy fast
• Open cabinet doors under sinks to let air reach the interior
• Run fans toward wet areas; open windows if outdoor humidity is lower than indoor
• Turn the AC on if it isn't already — dehumidification helps

Don't turn the electricity back on in a room with standing water until an electrician has checked the outlets, panels, and any equipment that got wet. Water and live circuits don't mix.

Call your insurance company sooner rather than later. Most policies require timely notice of loss. A call the same day puts you in a better position than waiting two days to assess the damage yourself.

The One Thing to Do This Week

Go find your main water shutoff. Test it — turn it off, confirm water stops at a faucet, turn it back on. Make sure every adult in your household knows where it is.

If you find that your shutoff valve is stuck, corroded, or won't fully close — or if you simply can't locate it — call us. This is a small job that makes a big difference. We'll locate it, show you, and replace a failed valve while we're there if needed.

Above + Beyond serves the full OKC metro — Edmond, Yukon, Moore, Mustang, Midwest City, Del City, Warr Acres, and surrounding areas