It differs from the Palmer Index in that the formula places less weight on the data from previous weeks and more weight on the recent week. This water may be pumped into your home from a well that taps into the aquifer. If your water source is a reservoir, precipitation and other surface water collects in the reservoir. This water is piped to homes from a public supplier. If you are on a public water supply, additional information on your local drinking water system is available from the U.S. Environmental Protection Agency .
Many local jurisdictions offer tips on how to conserve water.
You should contact your local water provider or water regulatory agency for tips that may be appropriate for your area. General tips on conserving water are available for municipal , commercial , industrial , and residential water users from the U.S. Environmental Protection Agency . Agricultural water users should discuss conservation options with their local Cooperative Extension Service agent. Effects of Drought on Ground-Water Resources General information on ground water can be found in the USGS Ground Water Fact Sheet . Ground water, which is found in aquifers below the surface of the Earth, is one of the Nation's most important natural resources.