Public hygiene is equally important as personal hygiene. Give reasons.

Public hygiene involves proper disposal of human excreta and domestic wastes. It is equally important as personal hygiene for the following reasons:

1. Sewage should be chemically treated first before being released into the water bodies to avoid water-borne diseases. There should be proper sewage lines connected to sewage treatment plants.
2. A healthy environment should be maintained by disposing garbage in covered bins to prevent breeding of flies, avoiding stagnation of water to prevent breeding of mosquitoes.
3. Contamination of drinking water with faeces (animal or human excreta) should be prevented as it is a major cause of diseases.