<human>:  Is week old chlorine water safe to drink?
<bot>: Yes, week old chlorine water is safe to drink. Chlorine is a chemical that is the second lightest halogen element. Chlorine is highly soluble in water and will dissolve in around 4 and a half days. The Water Quality and Health Council states that chlorination of drinking water protects consumers from diseases caused by waterborne microorganisms. So week old chlorine water is safe to drink.