Years of drought on the Colorado River, below-normal rainfall and snowpacks in the Sierra Nevada Mountains, combined with environmental restrictions on pumping of water, has severely reduced the region’s water supply.
To combat the situation Southern Californians have to make a conscious effort to save water. In fact to spread awareness on water conservation, BeWaterWise.com has a very informative section in ‘water saving tips’ - Water Saving Tips
Check out all the tips here and also pass them on to fellow Southern Californians!
Hope this helps.