Watch the video: Everyday question – can mineral water go bad?
Everyone has certainly had this experience before:
Water from an opened bottle tastes stale after repeated use.
But can drinking water go bad?
No, it can’t.
However, if a bottle is opened or water is left in the glass for a long time, the chemical composition of the liquid changes.
The water absorbs CO2 from the air and part of the liquid turns into carbonic acid.
This process lowers the pH of the water and makes the taste slightly sour.
However, this only impairs the taste experience.
It is generally not harmful. The best-before date on water bottles is therefore not an expiration date.
According to the table water regulations, manufacturers are obliged to specify a best-before date. “But even after this period has expired, mineral water can still be enjoyed without any concerns. The carbon dioxide preserves the mineral water and makes it last almost indefinitely.” – German Mineral Water Information Center. However, oxygen can penetrate plastic bottles and carbon dioxide can escape.
Plastic bottles can release hormone-like chemicals into the water.
Although there is no immediate health damage if you drink the water after the best-before date,
Nevertheless, researchers believe that long-term effects are possible. Overall, it is recommended to use opened bottles within a few days.
When opened, microorganisms can get into the bottle.
They multiply particularly in bright and warm environments.
Therefore, it is best to store opened water bottles in the refrigerator.
Avoid pathogens by not sharing a bottle with other people. When drinking, bacteria can get into the bottle via saliva.
Source: Stern
I’m Caroline, a journalist and author for 24 Hours Worlds. I specialize in health-related news and stories, bringing real-world impact to readers across the globe. With my experience in journalism and writing in both print and online formats, I strive to provide reliable information that resonates with audiences from all walks of life.
