A water tank is a container for storing liquid. The need for a water tank is as old as civilization, to provide storage of water for use in may applications, drinking water, irrigation agriculture, fire suppression, agricultural farming, both for plants and livestock, chemical manufacturing, food preparation as well as many other. Water tank parameters include the general design of the tank, and choice of construction materials, linings. Various materials are used for making a water tank: plastics (polyethylene, polypropylene), fiberglass, concrete, stone, steel (welded or bolted, carbon, or stainless), Earthen ponds function as water storage. Water tanks are an efficient way to help developing countries, LEDCs, to store clean water.