Paragraph | A Tube Well

A tube well is a water well consisting of a long tube bored into the ground and sunk to the depth of the water table. Tube wells are fast and easy to install, making them particularly popular in developing nations where the infrastructure for larger and more involved well designs is not in place. There are some potential drawbacks to this design, including the risks of water contamination if the well is not sunk in an appropriate location. In Bangladesh, for example, widespread use of tube wells has led to an increase in arsenic poisoning because of natural arsenic deposits in the soil. Several different techniques including auguring can be used to create the shaft for a tube well before sinking the tube, made of plastic, metal, or other materials. A cap at the bottom prevents leaching, while a screen traps particulates to keep them out of the well. Some tube wells are packed with gravel and sand to act as an additional filter. These materials trap particles in the water as it trickles toward the well.