Question

how water is treated? why?

Answer 1

Sedimentation : the heavy particles settle down and clear water moves to the filtration. Filtration :The water passes through filters that help to remove smaller particles.
Disinfection :A small amount of chlorine is added to kill any bacteria or microorganisms that may be in the water.
The purpose to of water treatment is to remove contaminates present in the water or reduce the concentration of such contaminates to make the water fit for its desired end - use
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Answer 2

Coagulation:  Alum and other chemicals are added to water to form tiny sticky particles called "floc" which attract the dirt particles.
Sedimentation:  The heavy particles (floc) settle to the bottom and clear water moves to filtration.
Filtration:  The water passes through filters that help to remove smaller particles.
Disinfection:  A small amount of chlorine is added to kill any bacteria or microorganisms that may be in the water.
Storage:  Water is placed in a closed tank or reservoir where it flows through pipes to homes and businesses in the community

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