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.
Mineral water or tap water will not supercool very well because they contain 'impurities' that can lower the freezing point of the water or else serve as nucleation sites for crystallization. Allow the bottle of water to chill, undisturbed, for about 2-1/2 hours. The exact time needed to supercool the water varies depending on the temperature of your freezer. One way to tell your water is supercooled is to put a bottle of tap water (impure water) into the freezer with the bottle of pure water. When the tap water freezes, the pure water is supercooled.