What is groundwater?
Groundwater is fresh water located underground in porous soil or fractures in rock formations. Collections of groundwater are called aquifers, and we draw from aquifers for drinking water and water for use in everything form irrigation to agriculture to manufacturing.
Groundwater pumping is when we pull water from the aquifer for our own use. When we pull more water than is naturally replenished, this is called groundwater mining because we have to drill deeper and deeper into the earth to get at the remaining water.
Groundwater is a very important source of water for civilizations worldwide, making up about 20% of the world's fresh water supply. Many cities have gotten used to mining groundwater to sustain its residents. However, as we overuse the resource, pull water faster than aquifers can naturally refill, and continue to pollute groundwater supplies, we're beginning to face a whole new set of serious problems with this vital resource.
This video from the International Groundwater Resources Assessment Center explains how groundwater is a