What Should You Do If Your Home Loses Water?
A sudden loss of water at home can be caused by a burst pipe, a frozen line, a municipal outage, or a problem with your own plumbing. Here is a calm, step-by-step plan to check the right things and protect your home.
Quick answer
5 steps — read this before anything else
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1
Turn off the main water shut-off valve if you see water leaking or spraying anywhere.
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2
Check whether your neighbors still have water to tell a building problem from a wider outage.
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3
Look for obvious signs: burst pipes, frozen lines, running toilets, or a flooded area.
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4
Call your water utility or a licensed plumber if the cause is not clear or water is escaping.
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5
Store drinking water safely and avoid using contaminated or standing water.
Warning
If water is spraying, flooding, or near electrical outlets or your electrical panel, shut off the main water valve if it is safe to reach, do not touch electrical equipment, and call a licensed plumber or your local emergency services.
Losing water at home is unsettling, but most causes fall into a few categories: a problem inside your own plumbing, a problem with the shared supply to your building, or a wider outage in your area. Working through the checks below in order will help you find the cause quickly and avoid making the situation worse.
What is happening
Water can stop for many reasons. A burst or frozen pipe, a failed pressure tank or pump if you have a well, a closed valve, a broken water main, or planned maintenance by your utility can all interrupt supply. The right response depends on whether water is escaping somewhere in your home. If it is, that is the priority.
Emergency warning
If you see water spraying, pooling, or flooding, treat it as an emergency. Shut off the main water valve immediately, then call a licensed plumber or your building manager. If water is near electrical outlets, switches, or your electrical panel, do not touch anything electrical. Leave the area and call your local emergency services if there is any risk of shock or structural danger.
What to do first
- Stop the flow if water is escaping. Find your main shut-off valve, usually near the water meter, in a basement, or outside near the property line. Turn it clockwise until it stops.
- Check with a neighbor. If they also have no water, the problem is likely the shared supply or a wider outage. If they have water, the issue is probably inside your home.
- Look for visible damage. Check under sinks, around the water heater, in the basement, and along exterior walls for leaks, frost, or bulging pipes.
- Check your own equipment. If you have a well, check the pump, pressure tank, and breaker. If you have a water softener or filter, make sure a bypass valve was not left closed.
- Contact the right people. Call your water utility for outages or main breaks. Call a licensed plumber for internal problems.
What NOT to do
- Do not ignore water near electrical fixtures, outlets, or your panel. Stay clear and get help.
- Do not use a flame or open heat source to thaw frozen pipes. Use a hair dryer, warm towels, or a space heater kept away from flammable material.
- Do not drink or cook with water from a tap you suspect may be contaminated after a main break or flood.
- Do not repeatedly open and close valves or force a stuck valve, which can cause a bigger break.
When to call for help
Call a licensed plumber if you cannot find or reach the shut-off valve, if a pipe is frozen and will not thaw safely, if water is escaping, or if supply does not return after the utility says the outage is over. Call your utility for any outage, odd color or smell, or low pressure affecting the neighborhood.
What to monitor
Watch for water stains on ceilings and walls, damp patches, a running water meter when all taps are closed, and any change in water color, taste, or smell. These can signal a hidden leak or contamination.
How to prepare
Learn where your main shut-off valve is and label it. Keep a few days of bottled water on hand, know your utility's outage number, and insulate exposed pipes in cold areas. If you have a well, know how to reset your pump safely.
Start by locating your main shut-off valve today, before you need it. If water is escaping or you are unsure of the cause, call a licensed plumber or your water utility right away.
This is general information, not a substitute for professional advice. In an emergency, call your local emergency services.
Sources & references
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