How can we extract the water which is trapped in aquifers?
Using tube wells and hand pumps
An aquifer is an underground layer of water-bearing permeable rock, rock fractures or unconsolidated materials (gravel, sand, or silt) from which groundwater can be extracted using a water well. The water trapped in aquifers is commonly and most economically extracted using tube wells and hand pumps. For doing this, a hole has to be dug through the earth which reaches the aquifers.