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keep the water free of pathogenic bacteria.
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keep the water free from algae growth.
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ensure the water is neither toxic nor irritating to swimmers.
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prevent the formation of undesirable smells or taste.
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prevent corrosion of the pool surround,fittings& equipment.
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prevent scale formation in the pool, filter or pipes.
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keep the pool always swimmable.
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keep the pool always a healthy ambience