Question
Download Solution PDFThe permissible pH value for public water supply is
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFExplanation:
Permissible pH Value for Public Water Supply
The pH value is a measure of how acidic or basic water is. For public water supply, it is essential to maintain the pH within a permissible range to ensure water quality and safety. The pH scale ranges from 0 to 14, where:
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pH < 7: Indicates acidic water.
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pH = 7: Indicates neutral water.
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pH > 7: Indicates basic (alkaline) water.
Analyzing the Given Options
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Option 1: 4.5 to 5.5
- This range is highly acidic and not suitable for public water supply as it can cause corrosion in pipes and is harmful for consumption.
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Option 2: 5.5 to 6.5
- This range is mildly acidic but still not ideal for public water supply. It may cause mild corrosion and taste issues.
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Option 3: 6.5 to 8.5
- This is the ideal range for public water supply as per most regulatory standards. It ensures water is safe for consumption, does not cause corrosion, and does not have taste or odor issues.
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Option 4: 8.5 to 10.5
- This range is mildly alkaline and may cause taste issues and scaling in water pipelines and appliances.
Correct Answer:
The ideal and permissible pH range for public water supply is 6.5 to 8.5, which corresponds to Option 3.
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