Find your main water shutoff
One-time · any month works
Why it matters
Someday — a burst washing machine hose, a split supply line, a frozen pipe letting go — water is going to be spraying inside your house, and every minute it runs costs you real money. That is the wrong moment to learn where your shutoff is. The families who come through a pipe failure with a wet-vac story instead of an insurance claim are the ones who could kill the water in under a minute.
What skipping it costs
$1,000–$15,000
A burst supply line dumps water at 5 to 10 gallons a minute. The difference between a $200 cleanup and a $15,000 insurance claim is how fast the water stops — and the homeowner who's googling 'where is my water shutoff' while the ceiling comes down loses that race every time.
Two ways to get it done
Do it yourself
You'll need: Flashlight, Your phone camera.
- Find it. Work backward from where water enters: follow the main line from the meter (street side) or pressure tank. Common spots: basement front wall, garage, water heater closet, crawlspace access, exterior wall box.
- Turn it. Gently. A ball valve (lever handle) goes quarter-turn; a gate valve (round wheel) turns clockwise until it stops. If it hasn't moved in 20 years it may be stiff — steady pressure, no cheater bars. If it won't budge or it weeps water afterward, stop and call a plumber.
- Confirm it works: open a faucet, then close the valve. Water should die to a trickle within seconds.
- Photograph it, and tape a label on it. Then show every adult in the house. The valve only counts if the person home at the time can find it.
- While you're at it, find the curb stop (the city valve at the meter) — you generally need a meter key for it, but knowing where it is matters if your inside valve ever fails.
Hire it out
$75–$150National fair range — local labor moves this number.
There's nothing to hire for the finding — but if your valve is stuck, corroded, or it's a 1970s gate valve that weeps when you touch it, a plumber can swap it for a quarter-turn ball valve, typically $75–$150 plus the service call. That's a legitimate upgrade worth doing; ball valves work every time, decades later, with two fingers.
The easy path: next time any plumber is in the house for anything else, have them show you the shutoff and test it while they're standing there. Takes them ninety seconds and they'll do it happily.
Ask the tech
- While you're here — where's my main shutoff, and can you show me it actually turns?
- Is this a gate valve or a ball valve, and is it worth swapping for a ball valve?
Red flags you're being upsold
- A whole-house repipe conversation that starts from nothing but an old shutoff valve. A stiff valve is a $150–$350 valve replacement, not a $12,000 project.
- Anyone who quotes an 'emergency shutoff install' without checking whether your existing one works first.
The call
DIY, today, before you need it. This is fifteen minutes that can save you five figures — there is no cheaper insurance in this entire app.