It's probably less important what might have happened, that what is required by law. If I recall correctly some bottled water is basically just bottling the mu

It's probably less important what might have happened, that what is required by law. If I recall correctly some bottled water is basically just bottling the municipal supply (i.e. no additional treatment or filtration). I don't really use bottled water, being lucky in where I live (and filtering). Does anyone know how much enforced transparency there is on the industry? In other words, can I in practice find out what processes they have applied or not to particular water, especially if the company has multiple plants ?