Find Your Water Main Before You Need It
Okay, here's the thing. This is the lesson I'm the most stubborn about. Everything else in this class you can look up later if you forget. This one you can't, because when you need it, you'll be standing in water.
Let me tell you how I found out.
I had a leak under my kitchen sink, nothing dramatic, just a slow drip that turned into a not-slow drip while I was at work. I got home, saw water on the garage floor, and went into full panic mode. I knew the move was to shut off the main. I did not know where my main was. I'm standing in my garage in my socks, wet socks at this point, opening random panels, moving boxes, genuinely lost in my own house. Found it eventually. Behind a rake I never use. Learned two things that day: where my valve is, and that I never want to feel that dumb again.
So now, day one of anybody hanging out at my place, they hear about the water main before they hear about anything else. It's insane to me that nobody tells new homeowners this up front. You get the keys, you get a stack of paperwork, and not one piece of it says "hey, here's how you stop all the water in your house."
Why this matters more than it sounds like it does
A running toilet is annoying. A cracked supply line under your sink at 2am is a different animal, and the only thing that stands between "annoying" and "call a restoration company" is how fast you can shut the water off. Not how fast you can fix the actual problem. Just how fast you can stop it.
You don't want to be learning this while water's coming through your ceiling. You want to already know it, cold, so it's boring.
How to find yours, real quick
Look for the main shutoff first. In a lot of homes around here it's in the garage, near where the water line comes in from the street, or in the basement if you've got one. Sometimes it's a valve you turn with your hand, sometimes it's a lever you turn a quarter turn. If you've got a house with a crawl space, check there too.
If you can't find it inside, check outside. There's usually a meter box near the sidewalk or the curb, a little rectangular lid in the ground. That one usually needs a special key or a wrench to turn, and honestly for most people that's the "call the water company" option, not the "do it yourself" option. But knowing it's there matters.
Turn it and see what happens. Once you think you've found it, turn it off, then go run a faucet somewhere in the house. If the water stops, you found it. Turn it back on. Congratulations, you just did the most important five minutes of homeownership.
Take a picture. I'm serious. Take a photo on your phone right now of the valve and where it is. Label it if you want. You are not going to remember this in six months when you're panicking about a leak. Future-you, standing in a wet garage, will thank present-you.
The cheap-fix opinion, since we're here
Here's a thing I believe pretty firmly: the scariest-looking repairs in your house are usually the cheapest ones. A running toilet, a dripping faucet, a garbage disposal that "died." Those look like emergencies and they cost under ten bucks to fix, nine times out of ten. People psych themselves out over stuff that's genuinely simple once you know where to look.
Which is basically how I ended up doing this whole thing in the first place. A while back I got a call from Pamela in my ward, faucet in her kitchen wouldn't stop dripping, driving her crazy. I went over expecting to be out of my depth. Turned out to be a worn washer, fifteen minutes, done. She fed me dinner afterward like I'd done something heroic. I hadn't. I'd just been willing to look. That dinner is honestly a big part of why I started doing this class. Turns out most of what scares people in their own house is small, cheap, and fixable, and somebody just needs to show them once.
Finding your main shutoff is the same deal. It feels like a big serious homeowner thing. It's a valve. You turn it.
Before next time
Find your water main this week, even if nothing's wrong. Snap a photo, show it to somebody in your house so more than one person knows, and bring the location to class next time so we can compare notes. You got this.