Dual-flush toilets are relatively new to many parts of the U.S., but they are widely used in other countries. In fact they are required equipment in all new construction in some more arid nations. These toilets are especially appropriate in regions that are naturally dry, in regions subject to drought, and in regions with high rates for water usage. A dual-flush toilet has two flushing buttons or options: a light flush that uses 0.5-0.8 gallons of water and a more powerful flush that uses 1.6 gallons of water. While this will not save water on a more powerful flush (most modern toilets use about 1.6 gallons per flush), it will save up to one gallon of water per flush on light flushes. Considering that the average person flushes 8 times per day, this could add up to a significant savings for a family of 4 or more. Older persons, who tend to flush more than 8 times a day and need more light flushes, could cut their water usage in half.

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