what are sewer systems ? how does it prevent us to drink polluted water?

Sewer system is a network of pipes which carries sewage and disposes the sewage water. This sewer system disposes sewage water to treatment plants which is further treated and purified by waste water treatment plants.
It prevents us to drink polluted water as this system transports dirty sewage water to treatment plants where it is purified and made reusable.
 

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sever system or sewage treatment is a process through which we can clean the polluted water ..........

if we drink polluted water we can get so many diseases..........

please give me a thums up

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server system or sevage treatment is a process through which we can clean the polluted water....

if we drink polluted water we may get sick.........

please give thums up............

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this is also known as sweage treatment.it is a facility consisting system of swere for carring off liquid and solid sewage waste

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