Well this is cool… I needed a new and just found this…
The average household could save more than 2,300 gallons per year by installing WaterSense labeled showerheads. Since these water savings will reduce demands on water heaters, households will also save energy. In fact, a household could save 300 kilowatt hours of electricity annually, enough to power its television use for about a year. If every household in the United States installed WaterSense labeled showerheads, we could save more than $1.5 billion in water utility bills and more than 250 billion gallons of water annually, which could supply more than 2.5 million U.S. homes with their water needs for a year. In addition, we could avoid about $2.5 billion in energy costs for heating water.
The WaterSense Label
All products bearing the WaterSense label must be tested and certified by an approved third party laboratory to ensure they meet EPA water efficiency and performance criteria.
Did you know that standard showerheads use 2.5 gallons of water per minute (gpm)? Showerheads that earn the WaterSense label must demonstrate that they use no more than 2.0 gpm. The WaterSense label also ensures that these products provide a satisfactory shower that is equal to or better than conventional showerheads on the market.
Performance Is Key
As with all WaterSense specifications, EPA included performance criteria to ensure that consumers will not have to sacrifice a good shower in order to achieve water savings. EPA worked with a variety of stakeholders—including consumers who tested various showerheads—to develop criteria for water coverage and spray intensity. Independent laboratories test showerheads for these attributes before certifying them to earn the WaterSense label.