Check your faucets at home  do any of them drip? Well, maybe
it's just a small drip  how much water can a little drip waste?
True, a single drip won't waste much water. But think about each
faucet in your home dripping a little bit all day long. What
if every faucet in every home on your block ... in your town
... in your state also dripped? The drips would add up to a flood
of water wasted down the drain. Worse yet is a running toilet
which may burn through 25,000 gallons a month or more!
A small drip has a volume of about 1/4 of a milliliter (0.25
ml). So, by my estimates, there are about 4,000 drips in a liter
of water. A gallon is equal to 3.7854 liters, so, by the math
(4,000 times 3.7854), we have about 15,100 drips per gallon.

