reasons why your water is temporarily turned off
If your concern is the big valve in your home that shuts off water to your home, then the next shutoff valve is located in your front yard where your water meter is. You can shut off the water there. Look for what looks like a small manhole cover with a nut on it. Open it up, find the valve and turn it off. If it is the valve in your yard then that is the water company's problem. Only they can shut off valves further up the line to repair that one, and besides it's their equipment.