The length of time that water can last in a glass bottle depends on several factors, such as the quality of the water, the type of glass used for the bottle, and the storage conditions. If the water is of high quality, meaning it is free from contaminants, and the glass bottle is of good quality and does not contain any cracks or defects, the water can last for several months or even years in the bottle. However, it is important to note that the taste of the water may change over time, and it may not be as fresh as when it was first bottled. It is also essential to store the bottle of water in a cool and dry place, away from direct sunlight, to prevent bacterial growth and to preserve the quality of the water. If the water is exposed to heat or sunlight, it can cause the growth of bacteria, which can lead to the formation of algae and other microorganisms. In general, it is recommended to consume bottled water within 3 days to ensure its freshness and quality. However, if the water has been stored correctly, it can last longer than this.