What are the main sources of water on Earth?

In general, the chief source of water on Earth is considered as River water. About 97% of water on Earth is Saline in nature, 3% is fresh water. Out of 3% 69% is in the form of Glaciers and Ice caps; 30% is ground water and only 1% is surface source which includes rivers, streams etc. read more

By Chelsea Hoffman; Updated September 22, 2017 Water, which covers around 70 percent of the Earth's surface, comes in the forms of freshwater and saltwater. read more

I’ll go with ‘Earth’. Water is a naturally occuring compound occuring and persisting in 3 main phases continuously on Earth, created as the stable chemical combination of hydrogen and oxygens. read more