Water pollution take place when undesirable substances are added into the water. Sources of water pollution include:
- Industrial chemicals being disposed into water bodies like rivers, lakes and oceans.
- Discharging untreated /raw sewage into water bodies.
- Leaching of insecticides/herbicides form agricultural activities into water bodies.
- Discharging non-biodegradable detergents after domestic and industrial use into water bodies.
- Petroleum oil spilling by ships and oil refineries
- Toxic/poisonous gases from industries dissolving in rain .
- Acidic gases from industries dissolving in rain to form “acid rain”
- Discharging hot water into water bodies. This reduces the quantity of dissolved Oxygen in the water killing the aquatic fauna and flora.
Water pollution can be reduced by:
- Reducing the use of agricultural fertilizers and chemicals in agricultural activities.
- Use of biological control method instead of insecticides and herbicides
- Using biodegradable detergents