Discussion
.................................. is a major source for fecal contamination in water.
Answer: A
The major source of fecal contamination is domestic effluent.
Fecal contamination comes from human and animal excreta. Domestic effluent, the sewage from homes, carries human feces and with it pathogenic bacteria, viruses and parasites; coliform counts in water are used as the indicator of this sewage pollution. Untreated sewage entering rivers and groundwater is the main cause of waterborne diseases such as cholera and typhoid.
Chemical, steel plant and pharmaceutical effluents are industrial wastewaters. They pollute water with chemicals, metals and drug residues, but they do not carry fecal matter.
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