Dual flush toilets can save 68 percent of the water used by traditional toilets. Dual flush technology allows the user to essentially select the amount of water needed for each flush. When removing urine, the user selects one button. This pushes only half the water required to remove the other stuff through the toilet. And because there's no siphoning action involved, the system needs less water per flush, and the larger diameter trapway makes it easy for waste to exit the bowl. A lot of consumers that are required to pay for water, don't realize how much each flush adds to your bill. So this can be a significant savings. As a plumbing & HVAC company, we always want to promote the most eco-efficient plumbing options.