Exemplar Problems

Question:

What is sewage? In which way can sewage be harmful to us?

Answer:

• Sewage is wastewater that contains a mixture of domestic, industrial, and commercial wastes, including human excreta, detergents, chemicals, and debris. Sewage can be harmful to us in the following ways:
  • It can contain pathogenic microorganisms that cause waterborne diseases.
  • Sewage can lead to water pollution, making water sources unsafe for drinking and recreation.
  • The organic matter in sewage consumes oxygen when discharged into water bodies, leading to oxygen depletion and harming aquatic life.
  • It can result in foul odors and unsanitary conditions if not treated properly.