13 Facts About Fresh water

Fresh water is the water resource that is of the most and immediate use to humans.

Fresh water is not always potable water, that is, water safe to drink by humans.

Much of the earth's fresh water is to a substantial degree unsuitable for human consumption without some treatment.

Fresh water is a renewable and variable, but finite natural resource.

Fresh water is replenished through the process of the water cycle, in which water from seas, lakes, forests, land, rivers and reservoirs evaporates, forms clouds, and returns inland as precipitation.

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Fresh water can be defined as water with less than 500 parts per million of dissolved salts.

Fresh water habitats are classified as either lentic systems, which are the stillwaters including ponds, lakes, swamps and mires; lotic which are running-water systems; or groundwaters which flow in rocks and aquifers.

Original source of almost all fresh water is precipitation from the atmosphere, in the form of mist, rain and snow.

Fresh water falling as mist, rain or snow contains materials dissolved from the atmosphere and material from the sea and land over which the rain bearing clouds have traveled.

Increase in the world population and the increase in per capita water use puts increasing strains on the finite resources availability of clean fresh water.

Physical Fresh water scarcity is where there is not enough Fresh water to meet all demands, including that needed for ecosystems to function effectively.

Fresh water is an important natural resource necessary for the survival of all ecosystems.

Water pollution reduces the ability of the body of Fresh water to provide the ecosystem services that it would otherwise provide.