Where to look first
Find the side of the house that faces the water meter — usually the street side. The supply line runs straight from the meter to that wall.
- Crawl-space homes: just inside the crawl-space access, on the pipe coming through the foundation
- Slab homes: garage wall, utility closet, or near the water heater
- Basement homes: front basement wall, near the floor
Test it before you need it
Old gate valves seize. Turn the valve off and on once a year. If it won't close fully or starts leaking at the stem, have it replaced with a quarter-turn ball valve — it's a small job that pays off the day a pipe bursts.
The curb valve
The meter box by the street has a valve too. It usually needs a meter key and belongs to the water utility, but in an emergency it will stop the water to the whole property.
If the valve won't turn
Older gate valves (round handles) seize after years without use. Don't force them with a wrench; the stem can snap and leave you with a leak you can't stop. Use the curb stop at the meter instead: a meter key from a hardware store turns it a quarter turn.
A seized or leaking main valve is worth replacing with a quarter-turn ball valve, which closes fully in one motion and is far more reliable in an emergency.
How to Find Your Main Water Shutoff Valve: when to call a pro
- Don't use electrical outlets or switches near standing water
- Don't keep flushing or running water during a sewage backup
- Don't use chemical drain openers on a backed-up main line
How to Find Your Main Water Shutoff Valve: common questions
Where is the main water shutoff in a Charlotte-area house?
In crawl-space homes it is usually just inside the foundation wall where the service line enters, often near the front hose bib. In slab homes look in the garage, a utility closet or near the water heater. The meter box near the street has a second shutoff.
Is it safe to turn off the water at the meter?
Yes, homeowners can use the curb stop in an emergency. Turn it a quarter turn so the valve handle sits across the pipe. Some utilities prefer you call them, but no one will fault you for stopping a flood.
Where is the main water shutoff usually located?
Where the water line enters the house: in the crawl space, basement, garage or a utility closet, often near the water heater. There may also be a curb valve in the meter box.
What if my main shutoff won't turn?
Don't force it. The water utility can shut off at the meter, and the valve should be replaced, ideally with a quarter-turn ball valve.
Every home differs; editorial standards.