Water your lawn in the early morning hours.
Check outside plumbing for leaks.
Be careful not to over water, check the soil and be aware of rainfall.
Make sure you know how to shut off your water if a leak should occur.
Don't leave faucets running.
Keep a pitcher of cold water in the fridge to drink.
Watch for leaks, especially in toilets.
When doing laundry match water level to the size of the load.
Use a water efficient shower head.
These are just a few of the ways that you can conserve water. For more information on how you can reduce water usage you can visit the following websites:
Outdoor Water Conservation
Indoor Water Conservation
Weather Based Irrigation Control