What is an example of a nonpotatable source used in emergencies for water cooling or washing?

In emergencies, an auxiliary supply refers to a secondary source of water that is not intended for drinking but can be used for other purposes, such as cooling equipment or washing. Auxiliary water sources can include recycled wastewater or nonpotable water harvested from alternative sources.

This use is particularly important in scenarios where potable water may be scarce or reserved for drinking and cooking. By utilizing an auxiliary supply, facilities can effectively manage water resources, ensuring that essential services continue without compromising public health.

While tap water is safe for drinking, and potable water is specifically treated for human consumption, and rainwater can be both potable and nonpotable depending on its collection and treatment, the focus here is on water that is acceptable for uses other than direct human consumption in emergency situations. This makes selecting an auxiliary supply the correct choice for the given context.