What is the maximum total chlorine residual allowed in mg/l?

The maximum total chlorine residual allowed is 4 mg/l. This limit is primarily set to ensure that chlorine levels remain effective for disinfection purposes while minimizing any potential negative health effects. Maintaining a chlorine residual of around 4 mg/l provides a balance, ensuring adequate disinfection of pathogens in water while reducing the risk of taste and odor issues or potential chlorination byproducts that could arise from higher levels of chlorine. The regulations surrounding chlorine levels are designed with public health and water quality in mind, helping to ensure that treated water is safe for consumption.