At many places the wastewater containing human excreta from homes and carried in big underground pipes is dumped into a river as such which pollutes the river water.
(a) What is the common name of such wastewater?
(b) Name five types of harmful organisms contained in it.
(c) Name any five human diseases caused by drinking river water contaminated with such wastewater.
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(a) The common name of such wastewater is sewage.
The water used by the community of people is defined as sewage. It is featured by toxic of water, physical condition, bacteriologic status and volume or rate of flow.
(b) Types of harmful organisms in sewage:
- Bacteria
- Viruses
- Protozoa
- Fungi
- Parasites
These organisms are always harmful to animals and humans. A sewage system is always associated, so, it'll not increase the presence of these harmful organisms in the water.
(c) Five human diseases:
- Cholera
- Typhoid
- Diarrhea
- Dysentery
- Jaundice
These are water-borne diseases which are produced by consumption of the unclean water or by organisms that live and reproduce in water.
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