We receive a lot of questions about water bills and the subject of water leaks. It is astonishing how much water loss a small leak can cause! Even a little leak can be expensive. There are things you can do to check for hidden leaks. One trick is putting some food coloring inside the water tank on your toilet. If you have a leak, the color will leak into the bowl when it is not in use. Here is a chart I found online to share with all of you.