One of the things we always to talk about to our customers: They have a leaking water heater. It's a panic, no one knows what's happening, how to make it stop. First of all, the first thing you need to know is how to shut off your water heater.
So, most water heaters have valves that look like this, and right now when this valve is perpendicular to the pipe, it's in the Off position. So, the first thing you want to do is shut off the water. That's the first thing you want to do. That means that no more water is going to be going into the tank, which means that you're basically solving the problem. The first thing you need to know is, shut off the water.