A toilet leak can waste up to 5 gallons of water a minute! That can total 7,200 gallons of water a day.

 If that much water were leaking from the toilet onto the floor into the bathroom, it would be noticeable. Most toilet leaks in the tank to the overflow, and then to the sewer.

Checking for an overflow leak

• Remove the lid off of your toilet tank
• Add in a few drops of food coloring or Toilet Tank Leak Detection Tablets to the tank and stir. Tablets are available at City Hall Information Desk or St. Cloud Central Services Building Information Desk - pick up the tablets free of charge
• Wait 25-30 minutes; do not flush or use the toilet while waiting
• After 30 minutes, look in the bowl to see if color has seeped from the tank into the bowl, water is entering the bowl from the overflow tube.
• If the float is not adjusted properly, water can continue to fill into the tank, and drain down the overflow tube. Pull up on the float. If the water stops running, you might need to adjust the float.
• The fill valve/inlet valve is not set properly or has malfunctioned. This sometimes causes a hiss or a squeal when filling. Try adjusting the fill valve. You might need to replace it.

If you need to jiggle the handle to make the water stop running? 

You may need to adjust the chain attached to the handle so that the flapper sits in the valve seat properly.