What kind of impact does your toilet have on your home’s water bills? The older a toilet is, the more water it uses when you flush. Toilets made before 1994 can use as much as seven gallons per flush. That’s more than most people drink in a week! Having Hobaica Services upgrade you to a low flow toilet that uses under two gallons per flush could keep you from literally flushing away as much as $30 per year per person in your household. If you have a family of four or larger, your low water use toilet will pay for itself in just a few months!