This type of bottled water is purified, but contains some dissolved solids. Natural water comes from well or spring systems and has no extensive treatment. Because this water is almost exclusively from groundwater sources, it usually contains a wide range of minerals and it is therefore more flavorful. Spring water rises naturally to the surface from underground, while mineral water comes from either a natural spring or underground source. Mineral water also contains some dissolved solids and it may be carbonated.
Temperature is an important factor for proper storage.
The quality and flavor of tap water depends on the salts and minerals it naturally contains and how much treatments it goes through. These and other technical reasons make tap water vary from location to location. Federal and state standards require regular testing of water from public systems to identify problems due to inadequate treatment. It would be appropriate to consume bottled water for protection of public health if notified by the person's local water supplier that drinking water violates state or federal standards. It is the consumer's choice.