The term 'Source of Water' can be answered by two crossword solutions: SPRING (6 letters) and WELL (4 letters). A SPRING is a natural source of water that is formed when groundwater flows out of the ground, often forming a pool or stream. Springs are often used as a source of drinking water and for irrigation. A WELL is an artificial source of water that is created by digging a hole in the ground to access groundwater. Wells are also used as a source of drinking water and for irrigation.