Chlorine is a water-disinfection product.

 

Laboratory tests show that chlorine ingestion corresponding to a concentration of 5 mg/l over 2 years does not cause health problems: above this threshold, there is no evidence as yet but WHO proposed a health-related guideline.

 

Chlorine taste threshold : 0.3 - 0.6 mg/l.

Odour threshold : 2 mg/l.

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• WHO guideline value : 5 mg/l.