Friday, July 19, 2013

Unit 4:Toast to the tap- the water we drink

Water is the true source of life without which we would not exist. It is confirmed that we can live a week without any food but not without water.
The water is essential to life. Today, people are concerned about the quality of the water they drink because of the water treatment plan that many companies used to. Many public water systems treat water with chlorine to destroy impurities or contaminants. The disinfectants that are used to prevent disease can create byproducts which may pose significant health risks. Nowadays, to drink water treatment at the point of use is no longer a luxury, it is a necessity, specially in our country!
We can detect impurities in the water by tasting or smelling and some people buy filters or water purifiers to purify their tap water.
The chemical chlorine is often used to keep swimming pools clean and colors it blue.
 

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