Life on Earth began with water. Water sustains life. The water cycle provides for a clean and uncontaminated supply of water.
Water provides an environment for living things.
Water is needed by people for drinking, cleaning, swimming, boating, fishing, cooking, farming, manufacturing a variety of products, and many other uses. 14,000,000,000 lbs. of sewage. 100,000,000 tons of plastic 165,710 tons of ship garbage. 1 to 10,000,000 tons of oil. A ten-minute shower can use 100 gallons or 378 liters of water.