What is the MRDL for chlorine and chloramines?

The maximum residual disinfectant level (MRDL) for chlorine and chloramines is set at 4.0 mg/l. This standard is established by regulatory agencies to ensure safe drinking water while effectively controlling pathogens and minimizing health risks. It reflects a balance between the disinfectant's ability to maintain water quality and the potential for adverse health effects at higher concentrations. Chlorine and chloramines are commonly used in water treatment processes to provide disinfection and help maintain water quality throughout distribution systems. Adherence to the MRDL helps water systems provide safe drinking water and protect public health.