EACB Studies. As promoting the Co-operative banks business model is one of our mission, the EACB is supporting the research on co-operative banking by being a partner to the researchers, or by publishing its own studies. Since 2013, we also stimulate the research with our Award for young researchers on co-operative banks.
The water can go stale, too. All companies that produce consumables must, by federal law, have an expiration date on it. Since bottled water is a consumable the company must put a expiration date on it.  Also some water becomes impure due to plastic melting or substances released into the water by the plastic.
Making the world better, one answer at a time. a) if the water is PERFECTLY sterile and the bottle is PERFECTLY closed, the water would stay sterile years and years and years.