Question

Classify water pollutants.

Answer 1

1. Organic pollutants: Sewage, domestic waste and animal waste.
2. Inorganic pollutants: Acids, salts, heavy metals and other chemicals.
3. Biological pollutants: Disease-causing microorganisms such as bacteria, viruses and parasites.
4. Physical pollutants: Suspended solids, sediments, plastics and other materials.
5. Radioactive pollutants: Radioactive substances released from nuclear activities and other sources.