What is one consequence of allowing chlorine residual to exceed the maximum level?

Allowing chlorine residual to exceed the maximum level can lead to potential health hazards. Chlorine is commonly used as a disinfectant in water treatment to eliminate harmful microorganisms. However, excessive amounts of chlorine can result in the formation of harmful byproducts, such as trihalomethanes (THMs) and haloacetic acids (HAAs), which are associated with various health risks, including an increased likelihood of cancer and other adverse effects on human health.

Maintaining chlorine levels within the recommended range is crucial for ensuring safe drinking water. While the right amount of chlorine effectively controls pathogens, levels above the maximum can detrimentally impact water quality and pose serious health risks to consumers. This is why managing chlorine residual is a critical aspect of water distribution and treatment practices.