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Flush Right

In a typical household, a toilet consumes the most water—roughly 27 percent of the total, according to the Environmental Protection Agency. A dual-flush model cuts that usage by providing full flushes to dispose of solid waste and half-flushes for liquids.

But before you pay $300 or more for a new toilet, you may want to consider a conversion kit for your existing unit. Available for $99 at major retailers, the Perfect Flush works with a top-mounted push-button box. It takes about 30 minutes for a homeowner to install and can save a family of four about $100 a year in water costs, the company says.

Similar products are Select A Flush and Aquanotion’s TwoFlush.

Sid Kirchheimer writes about consumer and health issues.