What if that valve is so old and crusty it looks like it belongs in a museum? Don’t panic. Sometimes they refuse to budge. In that case, you have a bigger problem—but also a bigger opportunity to feel like a master of the universe.
How to Turn Off Toilet Water - PlumbersStock Blog
You can always find the main water shut-off valve for your entire house. It’s usually near the water meter in the basement or garage. Turning that off will kill water to everything, which is a nuclear option but a lifesaver in a true emergency. Just remember to warn everyone before you do it so no one is mid-shower!