Natural source waters are classified as a food product and have to be tested regularly at the source, during bottling, and before leaving the bottling plant. As such, they must comply with strict EU and national food safety requirements, as well as industry guides to good hygiene and manufacturing practices.

It is a legal requirement in the EU and UK for each batch of bottled water to be traceable, like any other food product. For every batch, it is possible to trace the specific results for quality and the safety controls that were carried out during and after production.