Ground water is naturally pure and is a reliable source of water. Ground water is every where and it just depends how deep it is.
Surface water is on top of the ground where as ground water is below ground.
Some is but you can not tell just never drink something you dont know
Ground water includes all available water below the earth's surface in pore spaces, fractures and/or solution cavities (caves, caverns, etc). Basically, any water that is in the ground for a simpler...
It is the runoff of rain and melted snow that soaks in the ground.