Fixing water leaks can save homeowners more than 10% on their water bills.  Today's helpful suggestion is how to test your toilet tank for leaks.  Simply remove the lid from the tank and place carefully to the side.  Next, drop 2 drops of food coloring into the tank water.  You need to let that stand for about 15 minutes.  After 15 minutes, look at the water in the bowl.  You should not see any color, but if you do, you now know that you have a leak and will likely need to change the tank seal. Tank seals can be purchased at any home store and changed out relatively easily. For help or advice, just call or email us at 773-276-5430 or