This is a test of commonsense. Complete the next sentence:

How to fix a leaky shower faucet 
Make sure that the faucet handle is turned as far as it can go in the off position. 
If water is still leaking, the handle may be the problem. 
Turn off the water valves.
These will be located in the bathroom or basement. If you cannot locate the water valves, turn off the main water valve to your home.