What are the natural sources of underground water pollution?

Potential sources of ground water contamination. ... encroachment associated with over drafting of aquifers or natural leaching from natural occurring deposits are natural sources of groundwater pollution. ... The organic compounds occur in nature and may come from natural sources as well as from human activities. read more

Water comes from three main natural sources: rain water, underground water and surface water. Hidden water trapped in different forms such as in polar ice caps and glaciers is another important source of water. read more

A brief description of the contamination sources follows. Natural: groundwater contains some impurities, even if it is unaffected by human activities. The types and concentrations of natural impurities depend on the nature of the geological material through which the groundwater moves and the quality of the recharge water. read more

Water is polluted by both natural as well as man-made activities. Volcanic eruptions, earthquakes, Tsunamis etc are known to alter water and contaminate it, also affecting ecosystems that survive under water. Sources of Water Pollution. There are various classifications of water pollution. read more