What’s the best way to check for toilet leaks?
Toilet leaks can be wasteful and expensive. At least once a year, check your toilet for leaks by adding a small amount of red food coloring to the tank, and then check the toilet bowl later. If the toilet bowl water is colored red, water is seeping through from the tank. If it is leaking, you should replace the tank ball.
To Turn Off the Water Supply
Locate the shutoff valve.
It is usually located directly
under the fixture (sink or a toilet).
Once located, turn off the appropriate valve.
