What is a Silent Leak?
Leaking toilets cause more water waste than any other fixture in the home. A silent toilet leak (the one you normally can’t hear) can waste around 500 to 800 gallons of water per day! The ones you can hear will waste much, much more. Such wastage can normally be attributed to a faulty water level adjustment or to a leaky flapper.
Some Simple Math
500 = Gallons per day lost to silent leak
$.002 = Avg. Cost of a gallon of water
Total Cost Per Day = $1
Total Cost Per Year = $365*
* Does not include Sewer Cost
Why does my toilet only run in the middle of the night?
Many toilets really do run only at night; that’s because people use much less water during these hours and in many municipal water systems, the water pressure rises considerably during this time. It is not uncommon for system water pressure to rise by 15 to 20 pounds per square inch (psi), and by as much as 30 psi in some situations. This rise in pressure could cause “water creep” inside your gravity-fed tank by 1/2 inch or more. That is why the manufacturers of toilets normally suggest that the water level be set at approximately one inch below the top of the overflow tube.