Drinking water should be odorless, tasteless and live from turbidity and its pH should range between:
Correct answer: B. 7.0 to 8.5
- A. 6.0 to 7.0
- B. 7.0 to 8.5
- C. 4.5 to 6.0
- D. 8.5 to 9.0
Explanation
It is recommended that the pH of drinking water should be between 6.5-8.5 on a scale that ranges from 0 - 14, hence the answer will be B.
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Water pollution covers biological, chemical and physical contaminants, including pathogens, toxic metals, detergents and excess nutrients. Treatment involves screening, sedimentation, coagulation, filtration, disinfection and wastewater processing, while biochemical oxygen demand, chemical oxygen demand, eutrophication and dissolved oxygen indicate pollution levels.
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