some more suggestions

-Take shorter showers to reduce how much water you use. This will lower your water and heating bills too.
Install a low-flow showerhead. They aren't very expensive, and the water and energy savings can pay back your investment very quickly.
-Make sure you have a faucet aerator on each faucet. These inexpensive appliances conserve water and heat, while keeping the waters pressure up.
-Plant drought-tolerant native plants in your garden. Many plants need little watering.Try to find out which occur naturally in your area.