Water conservation is defined as the efficient use of water so that unnecessary or wasteful uses are eliminated. In many areas, more groundwater is drawn out of the aquifers each year than is recharged through rainfall and stream flow. As a result, groundwater levels have dropped dramatically. Demand for water from a state's streams and reservoirs may rapidly approach the available long-term supply. Across many states, many communities are regularly required to limit water use at some time during the year.
While some additional water supplies can be developed by constructing new reservoirs, in many locations the demand for water will still equal or exceed the available long-term supply. For these towns and cities, water conservation can make the difference between adequate supplies and shortages. Importantly, the way water is used and, in some instances, wasted must be rethought.
Useful information is also provided in the below links on how to measure home water use, how simple repairs can be made, and how water-saving devices are installed.