*Δεν "κράτησα" τη πηγή, αλλά νομίζω οτι είναι εύκολο να βρεθεί...:
WHO (World Health Organisation):
The WHO drinking water standards state that 2-3 mg/L chlorine should be added to water in order to gain a satisfactory disinfection and residual concentration. The maximum amount of chlorine one can use is 5 mg/L.
USA:
The national drinking water standards state that the maximum residual amount of chlorine is 4 mg/L.
ΑΠΣ για χλωριούχα... 250 mg/l έχουμε στην Ελλάδα;
