Chlorine (free residual)
Chlorine is used in the water treatment process to protect public health and ensure water is safe to drink, destroying bacteria and other pathogens that can be present in source water. This is a measure of the amount of chlorine left in your water once all the demand has been satisfied – the amount remaining to further destroy any microorganisms. All South Australia’s drinking water systems are consistently lower than the national health limit for free chlorine residual of 5 milligrams per litre and all efforts are made to meet the aesthetic limit of 0.6 milligrams per litre.
