Install low-flow flush fixtures.  Look for the WaterSense label on toilets and urinals.  The Energy Policy Act of 1992 declared all new toilets (water closets) should use no more than 1.6 gallons per flush (gpf).  The industry has advanced since then, offering ultra-low flow toilets that use only 1.1 gpf.  Urinals are also available in more efficient models.  A dual-flush valve effectively lowers water use by allowing the user to select a low-flush for liquid waste or bigger flush for more waste.  These simple water conservation strategies typically add little to no extra cost and reap quick paybacks.  

Low-flow showerheads and faucets with the WaterSense label also dramatically reduce water use.  At 0.5-1.0 gallons per minute (gpm), low-flow faucets can use up to 80% less water than typical faucet, which pours out water at a rate of 2.5gpm.  Hands-free motion sensors contain an adjustable timer to limit usage and control water flow on a sink faucet.  In a commercial building, hands-free sensors reduce water use and limit the spread of germs.