The Real High-Efficiency Toilets Have Arrived

Water/Energy: Linking Efficiency Efforts (Special Edition)
A version of this article appears in the Water/Energy: Linking Efficiency Efforts (Special Edition) issue of Home Energy Magazine.
Click here to read more articles about Water Efficiency
June 07, 2007
Why discuss toilets in an energy publication? The interesting secret about toilets—and all of the other fixtures and appliances that use water—is that they are responsible for a good part of a region’s energy consumption. Why? Because pumping water, delivering water, and treating wastewater all require electricity. About 5% of all electricity consumed in California is used to provide these essential water-related services. Another 14% is used on the customer side of the meter to water lawns, take showers, and so forth. In short, 19% of all electricity used statewide is used for water-related activities. And according to various field studies, toilet flushing in the typical home is responsible for 27% of indoor water use. Add to that the leakage that is found with older fixtures, and the figure can rise to well above 30%—more than for any other indoor use! Clearly, improving the performance and efficiency of toilets will save energy.

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