Final answer:
The frequency of testing for chlorine and chloramines should be regular, adapting to the specifics of the water supply's source, usage, and any pertinent regulations or events that may affect the water quality.
Step-by-step explanation:
Testing for chlorine and chloramines in water should occur regularly to ensure safe drinking levels are maintained. The frequency of testing can vary depending on the source of the water, the local regulations, and whether there are any indications of contamination or changes in the water supply. Some guidelines suggest that for pools, chlorine levels should be checked several times a week, whereas for drinking water, utility companies typically monitor disinfectant levels frequently as part of their routine checks. In special situations, like after a natural disaster, more frequent testing may be necessary to ensure that disinfecting efforts, such as those using household bleach or sodium dichloroisocyanurate (NaDCC), are effective.