What is the primary function of chloramines in water systems?

Chloramines play a crucial role as a long-lasting disinfectant within water distribution systems. They are the result of combining ammonia with chlorine, and their primary function is to maintain water quality by preventing microbial growth as water travels through pipes. Unlike chlorine, which dissipates relatively quickly, chloramines provide residual disinfection over a longer period, effectively inhibiting the regrowth of pathogens in the water supply.

This property makes chloramines particularly valuable in maintaining safe drinking water standards, ensuring that the water remains free of harmful microorganisms up until the point of use. Their stability and efficacy allow water utilities to deliver treated water over greater distances without compromising safety. Understanding this function is essential for those involved in water treatment and distribution, as it underlines the importance of maintaining a properly disinfected water supply from the treatment facility to the consumer's tap.