It's a naturally occuring underground layer of rock, gravel, sand or even salt that contains a lot of water. This is enough to provide a lot of water supply that people can use.
Some people obtain their water from underground layers of rock or sediment called aquifers. It's a naturally occuring underground layer of rock, gravel, sand or even salt that contains a lot of water. This is enough to provide a lot of water supply that people can use
