Water Usage and Treatment Where does the water

Water Usage and Treatment

Where does the water that we use • Most water on the come from? planet is salt water. • Fresh water – lakes, rivers, streams, ground water • The saline content makes it poisonous to plants and animals.

Where does the water that we drink come from? • Lakes • Rivers • Underground aquifers - area underground rock through which water can move.

Coagulation • Chemicals are added to water to remove dirt. • Dirt drops to the bottom

Sedimentation • Large particles drop to the bottom

Filtration • Water moves through filters like sand, gravel and charcoal to remove small particles

Disinfection • A small amount of Chlorine is added to the water to kill microorganisms.

Storage • Water is put in a closed tank or reservoir and runs through pipes to communities

How do we use water? • Drinking • Bathing • Irrigation • Industry

Is water renewable or non renewable? • Water is a renewable resource (water cycle), but some areas have such a high need that water shortages can occur.

Potable Water • Potable water is water that is safe for human consumption. • In some parts of the world, people do not have water delivered to their home threw pipes. They must travel to get potable water.

• Water supplies can become contaminated due to poor sanitation. • This can lead to life threatening diseases such as cholera.

Desert Biome Map

• Why is it a good idea to conserve water? • What are some things that you can do to conserve water? • What are some things that your family can do to conserve water? • What are some things that our community can do to conserve water?

The water crisis • http: //thewaterproject. org/water_stats#stats • Create a poster to inform students about the importance of water conservation.