Good quality water is needed for a healthy life. In the United Kingdom, obtaining safe water for drinking is as simple as turning on a tap. The water is made safe to drink by what and companies.
However, in many parts of Africa and Asia, water used for drinking is contaminated and untreated. It is estimated that 2.2 million people die each year as a result of drinking contaminated water.

Explain why water for drinking is filtered and then treated with chlorine.

Simply cuz so u can drink It without bacteries chlorine also changes a bit taste depends on RM

!Do not use this answer for cheating, please only use my answers to check your own!

Before tap water was found, people would use rocks, gravel, and sometimes even thick cloth to filter water. If you do not filter water, there is a huge chance that bugs, bacteria, viruses, and other things may be entering your body. Today some houses still have the past was of filtering, with rocks and gravel. Except chlorine is used to kill any bacteria that was left over the rocks and gravel may of missed.

14 days is the half-life of phosphorus-32