Which method can help ensure effective disinfection in water systems?

Regular monitoring of chlorine levels is essential for ensuring effective disinfection in water systems because it allows operators to maintain the appropriate concentration of chlorine that is necessary to eliminate harmful pathogens. Chlorine is a widely used disinfectant due to its effectiveness against a broad range of microorganisms. By consistently checking chlorine levels, water treatment operators can identify any deficiencies or fluctuations, which might indicate a need for adjustment in the disinfection process.

This practice not only helps achieve compliance with health regulations but also protects public health by ensuring that water remains safe for consumption. Proper monitoring enables timely interventions if chlorine levels decrease, which could lead to inadequate disinfection and potential contamination of the water supply.

In contrast, reducing water flow rates, increasing pipe length, or using non-chlorine alternatives do not directly contribute to maintaining effective disinfection levels in the same way that regular monitoring of chlorine levels does. While these approaches can play roles in water quality management, they do not replace the necessity of ensuring that chlorine levels are kept within the target range to achieve effective pathogen control.