Most instances of higher than normal water usage are caused by leaks in a toilet’s flush tank. These leaks are often difficult to detect and may go unnoticed. Leaks are also commonly found in sinks, bathtubs, furnace humidifiers, hot water tanks, water softeners and homes with hot water heating systems.
It is suggested that you check your flush tanks and other points of usage periodically. You are responsible for water usage, regardless of the nature of that usage. Additionally, no discount is given for filling swimming pools.