What is the purpose of chloramines as a disinfectant?

Chloramines serve a vital role in water treatment as a disinfectant primarily because they provide longer-lasting residual disinfection. Unlike chlorine, which can dissipate quickly from the water supply, chloramines are more stable and persist in the distribution system for extended periods. This enduring presence helps to ensure that the water remains free from harmful microorganisms throughout its journey to consumers.

The use of chloramines in disinfection helps maintain water quality, especially in large distribution systems where water may take longer to reach end-users. This is particularly important in public health, as it decreases the risk of contamination and ensures that safe drinking water is provided consistently.

While chloramines are not specifically designed to enhance taste, neutralize heavy metals, or directly promote water clarity, their primary purpose revolves around effective and sustainable disinfection in the water supply system.