If the pH of water is 7 it means the water is

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• Disinfection of drinking water means removal of
• Disinfection of drinking water means removal of
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• The presence of algae in water indicates that the water is
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• is a method where water is used as a medium for the flow of sewage from its production of the treatment unit.
• The water carriage system is a hygienic system without any bad smell.
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