What should be the chlorine residual requirement at the point of consumption under ordinary field conditions?

The chlorine residual requirement at the point of consumption under ordinary field conditions is set at 1 ppm (parts per million). This level is considered effective for ensuring the disinfection of drinking water, helping to kill or inactivate harmful microorganisms that may pose a risk to health.

Setting the residual chlorine at 1 ppm strikes a balance between being effective enough to provide a safe water supply while preventing unpleasant tastes and odors that can occur at higher levels. Monitoring and maintaining this level is crucial in military settings, where access to clean water is vital for the health and readiness of personnel.

While higher levels of chlorine may be used in certain disinfection processes, the 1 ppm standard is the minimum required at the consumption point to provide a safe drinking water supply without compromising the palatability of the water.