Question

How did the purifying drinking water from towns and cities​

Answer 1

A typical water treatment process. Coagulation and flocculation - Chemicals are added to the water.

Filtration - The clear water on top passes through filters composed of sand, gravel and charcoal to remove dissolved particles such as dust, parasites, bacteria, viruses and chemicals.

Water purification can be done by four methods of either chlorination, distillation, boiling, or filtration.

Water purification may reduce the concentration of particulate matter including suspended particles, parasites, bacteria, algae, viruses, and fungi as well as reduce the concentration of a range of dissolved and particulate matter.

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