Step 4: Don't let your water continue running
Brushing takes two minutes. During that two minutes, valuable water is going to waste. Turn that faucet off, and turn it on to clean your tooth brush! It saves 4 gallons a minute. That's 200 gallons a week for a family of four.
Turn the faucet off when you lather up to wash your hands...even when you are showering!
Turn off the water while you shave and you can save more than 100 gallons a week.
If you are letting the water heat up in your shower, you can collect the cold water and use it for plants, or other uses that you use water for around your house.
The point here is, don't keep your water running when you are not using it. If it is running, do something useful with that water.