how much water is left on earth

Quick Answer: Earth has about 1.386 billion cubic kilometers (332.5 million cubic miles) of water, and almost all of it still exists today because water continuously moves through the water cycle. However, only about 2.5% of Earth's water is freshwater, and less than **1% is easily accessible for human use.

Many people ask how much water is "left" on Earth because they worry that the planet is running out of water. In reality, Earth does not lose a significant amount of water over time. Instead, water is constantly recycled through the water cycle, which includes evaporation, condensation, precipitation, and runoff. The same water molecules that existed millions of years ago are largely still present today.

The bigger concern is not the total amount of water on Earth but the amount of usable freshwater available to people, agriculture, and ecosystems. Most of Earth's water is salty and found in oceans, making it unsuitable for drinking without desalination. Of the freshwater that does exist, a large portion is trapped in glaciers, ice sheets, or stored deep underground, leaving only a small fraction readily available in rivers, lakes, and reservoirs.

For example, the water people use every day for drinking, cooking, farming, and industry comes from a tiny percentage of Earth's total water supply. Growing populations, pollution, climate change, and overuse of groundwater resources can make clean freshwater more difficult to access in some regions.

In short, Earth still has nearly all of its original water—about 1.386 billion cubic kilometers—but only a very small amount is easily accessible freshwater. Conserving and protecting this limited resource is important for ensuring a sustainable water supply for future generations.

Earth has a lot of water on its surface i.e. about 71% of its surface area is covered with water. This majorly constitutes of oceans and saltwater bodies. If we talk about the drinking water left on this planet then the stats are quite low. Only 2.5% of water on earth is fresh drinking water. However this entire water is not accessible as most of it is in the form of glaciers and mountains. Thus the accessible portion of water accounts for less than 1%.

Recently a lot of awareness programs have been focusing on saving water. While the amount of water on Earth has remained constant over time as it is continually recycled by the atmosphere and back into our cups, the population in the world has exploded. This means that every year the competition for a clean, copious supply of water intensifies leaving some people with shortages. This has led the environmentalists to believe that soon most of the world will face this danger with such high rates of increasing population.

While most of the people don't face the problem of water shortage and find it to be an abstract phenomenon, there is a part of world population that struggles on a daily basis to get this basic necessity. In India itself there are thousands of households who spend a day in just one bucket of water.

Thus the water on the planet remains the same and never increases or decreases but its the population stress that reduces its availability.