potability

This term is primarily used in technical, scientific, or regulatory contexts, such as public health reports, environmental engineering, and water quality assessments. It carries a clinical tone and is rarely used in casual conversation, where a speaker would instead say the water is "safe to drink" or "drinkable."

As an abstract quality, the word is uncountable. It describes a state of being rather than a discrete object, meaning it does not have a plural form and cannot be counted with numbers.