What defines potable water?

Potable water is defined as water that is fit for human consumption. This means it meets the health-based standards set by authorities to ensure it is safe to drink and use for cooking, bathing, and other personal hygiene activities. The term "potable" specifically emphasizes that the water does not pose any health risks to humans when consumed.

While the other options mention different types or uses of water, they do not align with the definition of potable water. For instance, water that is safe for animal consumption is not necessarily safe for humans, and water categorized as chemically treated does not guarantee that it is potable, since some chemicals might be harmful to human health. Additionally, water used for irrigation can be of varying quality and may not be suitable for drinking. Therefore, the correctness of the definition relies on the understanding that potable water is specifically intended for human use and consumption.