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The EPA has named Home Depot one of its WaterSense Partners of the Year for its commitment to selling water-saving products. The home improvement chain sells only WaterSense labeled bathroom faucets in its 2,000 locations and calculates that customers saved roughly 27 billion gallons of water and $174 million on water utility bills in 2010. According to the EPA, a product that earns the WaterSense label uses 20% less water than competing devices.

Beyond bathroom faucets, Home Depot also sells WaterSense-labelled showerheads, toilets, and other accessories. You can read more about Home Depot's water-saving products here, where, among other links, you'll also find links to instructions on how to install a new WaterSense toilet.

WaterSense, an EPA program, helps consumers save water (and therefore money) by promoting products for businesses and consumers that save water. 

The WaterSense website is a great resource. Visit it to see how smart you are about your water use, calculate how much water you'll save if you make certain changes in home home (like adding a low-flow toilet), find rebates for water-saving products, or search for water-saving products.