Below is a diagram of a poorly planned town showing some building and facilities

​Below is a diagram of a poorly planned town showing some building and facilities

​a) Giving evidence from the diagram, state two likely sources of water pollution.           (2mks)

• Industrial effluents because the factory is close to the river.
• Domestic effluents since some houses are next to the river and the marsh.

​b) State three ways that the positioning of the refuse pit and sewage works pose danger to the residence of the town.                    (3mks)

1. Drinking water contamination since the water works is close to the sewage works;
2. Spread of diseases to residents nearby because many pathogens and diseases vectors are found in the sewage works and refuse pit near the houses;
3. Air pollution because the prevailing wind carries unpleasant smell over the town;

​c) Residents living close to the marsh are likely to suffer from malaria. Explain.             (1mk)

• ​The swamp is the breeding site for mosquito larva hence adult mosquitos may spread malaria to residents living nearby.

​d) Suggest two control measures to overcome water pollution in the area.         (2mks)

• Treating industrial and domestic effluents before releases it into the water.
• Cooling the water from the factories to avoid raising water temperature in the river and swamp.
• Carry out environmental impact assessment before establishing factories/industries;etc