Living landscapes need water to survive and flourish. Relying completely on natural rainfall isn't usually the best method of supplying water. Depending on the type of grass and other plantings you have in your landscape, a more constant source of water may be required. Standing with a garden hose for hours is not the answer. A home irrigation system might be what you need. A properly installed and maintained in-ground/underground sprinkler system conserves water by directing it exactly where and when it's needed.