Properly position your sprinklers. Direct the spray in such a way that water lands on your lawn or garden, not on concrete, where it does no good. Avoid watering on windy days when much of your water may be carried off before it ever hits the ground. Check for leaks in pipes, hoses, faucets and couplings . Even a small drip can waste 50 or more gallons of water a day.
Larger leaks can waste thousands of gallons.
Less than 12 - means you need to change your water conservation habits.