1, unopened shelf life of 3 months. Opened on the water dispenser as soon as possible after drinking finished. Recommended no more than a week. Reason after opening by the equipment (water dispenser) and the environment is prone to breeding bacteria and other harmful substances.
2. Long-term consumption is harmful to health.
3, qualified pure water is not allowed to add any additives.
Personal opinion: According to my understanding, pure water is initially industrial water. Not purposely given to people to do drinking water and the birth of. Many medical experts recommend that people should not drink pure water for daily drinking, especially for developing children and teenagers and the elderly. If you are interested, you can check the Internet for related information.