Take advantage of American Standard’s Water Usage Calculator and see the savings add up!
First, select your type of establishment (probably household).
Plugin (or guess) your average cost of water per 1000 gallons per year. Then go through each type of water fixture – toilets, faucets, urinals and showers, and select how much water your current fixtures use – GPF (gallons per flush) or GPM (gallons per minute).
To find your toilet/urinal GPF, check behind the seat hinge on the bowl for the brand name and a gpf label. If you don’t see one, lift the tank lid and check the inside back of the toilet tank for the
manufacturer’s date stamp. Then take a look at the chart here. You can also read your water meter, flush the toilet, and read the meter again.
To determine your shower or faucet’s GPM:
1. Turn the fixture handle fully on to its normal position.
2. Place a container under the fixture and collect the water for exactly 10 seconds.
3. Measure the quantity of water in the container and convert the measurement to gallons . For example, if your measure 2 quarts of water in your container, you have collected 1/2 gallon.
4. Multiply the measured quantity of water by 6 to calculate the flow rate in gallons per minute. In our example, 1/2 gallon multiplied by 6 calculates as 3 gallons. A flow rate of 3 GPM indicates a fixture that is not meeting Federal standards.
(thanks: homerepair.about.com)
Compare with a water efficient American Standard product, select the number of products in your home (or establishment), plus the number of uses per day for each product and see what your savings could be!