Water Department : Leak Information
High Water Reading? You May Have a Leak
Toilet leaks are the most common cause of high water bills. To check if your toilet is leaking, first take the lid off the back of your toilet to see if the water is flowing over the top of the overflow tube. If it is, then you have a leak.
Also, you can follow these steps to check for a leak:
2) Take the lid off the back of your toilet and place 2-3 drops of food coloring in your toilet tank – not in the bowl
3) Do not flush the toilet. Let stand for 20-30 minutes
4) Check your toilet bowl for coloring… if color is in the bowl, you have a leak