Health Hygiene & Sanitation

Lesson 25 : Water pollution And Water Act

Man-made Water Pollution

Man-made water pollution includes

• sewage which contains decomposable organic matter and pathogenic agents
• industrial and trade wastes, which contain toxic agents like metal salts, complex synthetic organic chemicals, etc.
• agricultural pollution, which comprise fertilizers and pesticides, physical

pollutants like heat (thermal pollution) and radioactive substances.

Other reasons of water pollution includes

• corrosion of pipe lines
• leaky joints
• cross connections between water supply pipes and sewage drainage pipes