Question: how many litres of water are on the earth

Kate Winfield answered on 12 Nov 2019:

There is roughly 1,260,000,000,000,000,000,000 litres of water on our planet! Ninety-eight percent of the water on the planet is in the oceans, and therefore is unusable for drinking because of the salt. About 2 percent of the planet’s water is fresh, but 1.6 percent of the planet’s water is locked up in the polar ice caps and glaciers. Another 0.36 percent is found underground in aquifers and wells. Only about 0.036 percent of the planet’s total water supply is found in lakes and rivers.