Excuse me, can I still drink bottled water that I haven't finished drinking in the dormitory for a month in theory? Find a solution

You'd better not drink that bottled water. It is best to drink it within one week after opening. The longer it is left, the easier it is to deteriorate. It's easy to get queasy after drinking. I suggest you buy a water dispenser. If it is left for a long time, it will burn, but it is best to drink it as soon as possible. I hope my answer is helpful to you. Thank you!