Question

pathogenic bacteria enter waste water primarily from domestic or industrial or both

Answer 1

These bacteria a enter the water waste from both industrial and domestic as these bacteria are present in both these conditions.

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Answer 2

Both domestic and industrial wastewater contain pathogenic bacteria.

• Industrial wastewater contains bacteria belonging to Firmicutes, Proteobacteria, and Bacteroidetes phyla.
• Thiobacillus, Nitrobacter, Pseudomonas, Bacillus, etc. are examples of pathogenic bacteria found in industry effluent.
• Bactria is a boon and a bane. While they are used in industries for the production of enzymes, colors, etc. if these bacteria mix with drinking water they can be pathogenic and cause various diseases.
• Bacteria found in domestic waste are E. coli, Klebsiella, Vibrio cholerae, Mycobacteria, etc.
• Unlike industries, the bacteria in domestic waste comes from spoilt food, feces, etc.