A leaky toilet can waste up to 1,000 gallons of water a month! If your toilet has a slow leak, it’s not easy to detect. Use this simple trick to test your toilet and make sure you that you aren't unknowingly jacking up your water bill.
Remove the tank lid. Carefully lift the lid off of the toilet’s tank and place it aside.
Put five or six drops of food coloring in the toilet tank. Once your water is a colorful hue, place the lid back on top of the tank. Lift up your toilet seat so you can see the bowl.
Don’t flush for at least a half hour. After 30 minutes, check your toilet water in the toilet bowl. If it’s colorful, you have a leak! Colored water in the bowl means that you have a slow leak between the toilet and the tank.