In every two minutes of taking a shower, you use 10 gallons of water. The average person in Africa uses only 4.5 gallons of water per day for drinking, bathing, cleaning and cooking, together. If everyone in US saved just one gallon from daily shower, over the course of a year it would equal twice the amount of freshwater taken from the Great Lakes every day – the world’s largest source of freshwater.
Whenever possible, please take a shorter shower, turn off the faucet when brushing your teeth and turn off the water while you shave.
In the kitchen, do your best to not run the faucet when it's unnecessary - just lightly/quickly rinse dishes (if you have a dishwasher) and don't let the faucet run while you do other kitchen tasks (washing counters, loading dishwasher, cutting veggies, etc).
To rinse fruits and veggies, I usually just fill up a bowl with water and wash them in the bowl - saves gallons of H2O! And then I use the leftover water to feed my lovely little succulents around the house :)