Aquifer storage and recovery

Aquifer Storage and Recovery (ASR) is a way of saving and getting fresh water from underground. A special kind of well is built deep into the ground, and the water from lakes, rivers, or other bodies of water is then pumped down into the well and stored in the spaces between rocks and dirt that make up the ground. Later, when people need to use the water, they can get it back easily by pumping it up again. This is like saving water in a big underground tank that is safe and lasts a long time.