How do high-efficiency toilets save water?
High-efficiency toilets fall into three categories: dual flush, gravity flush and pressure-assist models. A dual flush toilet is a toilet that allows the user to choose between a “short flush” that uses between 0.6 and 1.0 gallons for liquid waste, and a “full flush” that uses 1.6 gallons for solid waste. Many new models have a combined or average flush volume of 1.2 gallons per flush. The 1.0 gallon-per-flush pressure-assist single flush toilet uses compressed air to create a powerful flush to push the waste out of the bowl. Gravity flush toilets are the most common type of toilet found in homes. Gravity flush high-efficiency toilets flush with 1.3 gallons per flush or less and use the weight of the water along with gravity to pull the waste from the bowl.
