Under normal conditions, how long can a person survive without water?

The ability of a person to survive without water greatly depends on various factors such as age, health, environmental conditions, and physical activity level. Typically, under normal circumstances, a person can survive around three days without water. This timeframe is based on the fact that the body can experience significant dehydration and begin to fail after this period.

Water is crucial for maintaining bodily functions, including regulation of temperature, removal of waste, and transport of nutrients. Once dehydration sets in, it can lead to serious complications and ultimately death if not addressed. While there are scenarios where someone might last longer or shorter without water, three days is a general guideline accepted due to the body's high water composition and essential needs.