The blue tone is due to the introduction of recycled plastic. Since with the blue coloration this introduction becomes more homogeneous. At no time does it affect the conditions of the container or the natural mineral water.
The introduction of different percentages of recycled plastic in our bottles goes through homologation procedures to ensure that the regulations of materials with food contact are complied with. Organoleptic analyses are one of the different parameters that are controlled to ensure that there is no alteration of the taste of natural mineral water.