Water Pollutants - Water Pollution
Water pollution can occur on account of any one or more of the following agents:
1. Biological: Pathogens such as virus, bacteria, protozoa and worms.
2. Chemical:
- Inorganic: nitrates, phosphates, chloride and fluoride,
- Organic: pesticides, dyes, chloro-compounds, phenols, points and plastics.
- Heavy metals: soluble heavy metal ions such as mercury, lead, cadmium, copper, zinc and their organometallic compounds.
3. Physical: Waste heat from industrial plants