introduction Did you know that the water we use today is the same water the dinosaurs used? We cannot create new water. For millions of years, the water we have has been used again and again. We have been able to do this because there are natural cycles that clean the water each time we use it.
Even though ¾ of the earth’s surface is covered with water, the water available for the ordinary use of everyday life is scarce. This limited reserve of fresh water is now being polluted in several ways!
Definition of Water Pollution is… any contamination of water with chemicals or other foreign substances that are detrimental to human, plant, or animal health It does look detrimental to health… How does that look?
Water pollutants include… • fertilizers and pesticides • sewage • food waste • heavy metals • chemical wastes
Businesses and cities dump chemicals and waste products into our rivers, lakes and oceans. People throw trash–furniture, garbage, old tires, cars, old fencing, anything they can think of–into the water. By accident, people let theircars to leak oil and gas onto the ground. That oil and gas eventually washes into the water. The acid rain also poisons water.
What problems does this cause? Garbage completely covers the surface of this river in Jakarta, Indonesia, harming both the water and the organisms that live within it.
It causes Diseases in Humans Worldwide, nearly 2 billion people drink contaminated water that could be harmful to their health. And almost 1.9 million children die each year from diarrheal diseases caused by unsafe drinking water
Signs warn the public in an area harboring high bacteria near a drain at Will Rogers State Beach, California. It causes “Marine Desert” “(CNN) -- It's thousands of square miles wide, virtually devoid of oxygen and it has been blamed for an increase in shark attacks: the Gulf of Mexico "Dead Zone" is getting bigger and forcing marine life -- including sharks - into shore.” Signs warn the public in an area harboring high bacteria near a drain at Will Rogers State Beach, California.
How are “Marine Deserts” formed? • A flood of nutrients, such as agricultural fertilizers, boost algae production in the sea. These growths consume huge amounts of oxygen creating a "marine desert" almost devoid of life. • Other water pollutants can also have a serious effect on water sources by depleting oxygen levels, stunting the growth of plants and even suffocating fish - as in the Gulf of Mexico "Dead Zone." “Dead Zone” in the Gulf of Mexico
Did you know…? • 1.2 trillion gallons of raw sewage, stormwater, and industrial waste are dumped into U.S. waters annually. • 73 different kinds of pesticides have been found in groundwater which is potential drinking water. • In America, one in six children is exposed to mercury levels high enough to put them at risk for short-term memory loss.