Water well drillers drill water wells to provide a source of water for living things. Irrigation wells for irrigating crops like corn and soybeans. Domestic wells for houses that are too far from city water sources. Livestock wells for cattle, pigs, horses, etc. for livestock that do not have farm ponds. Many drillers also do well maintenance on existing wells. Many wells in Nebraska use the renewable energy of wind to pump water for the livestock. These renewable energy pumps are called windmills.