If you think your water use is higher than normal you may have a small, undetected leak.  Please come to the business office to get a packet of dye strips to test your toilet tank for leaks.  Toilet leakage is very common, and can be a silent leak – sometimes you will not hear water running or dripping.  Drop the dye strip or food coloring in your tank and if you see the dye color in the bowl – you have a leak.  Contact your plumber for assistance.