One of the LEED for Homes requirements is to reduce water use with water-efficient fixtures. Regardless of whether you're working on a LEED project, a good guideline to follow is to use products certified under US EPA WaterSense. The WaterSense seal makes choosing high-efficiency shower heads, toilets and faucets easy…
WaterSense is a partnership program sponsored by the U.S. Environmental Protection Agency (EPA). Under LEED, using any WaterSense certified faucet automatically grants you the maximum points available for the associated Water Efficiency category. So it's a sure bet that using a WaterSense certified fixture will be a great way to reduce your indoor water usage.
If you're on the search for a new plumbing fixture, just head to the WaterSense website and find the type of product you're looking for. Listed on the website is every brand and model name that's met the WaterSense criteria.
In addition to being a great resource for water efficient fixtures, the WaterSense website is also full of helpful tips on saving water in your home, information on water quality, and a simple calculator to estimate how much water you can save by switching to low flow plumbing fixtures.