Bottled water sells certainty, and for a traveller that certainty is worth paying for. At home the calculation is different, and worth doing.
Two different products under one label
Natural mineral water comes from a protected source and carries the mineral profile of the rock it moved through. The composition is printed on the label because it is the product.
Packaged drinking water is a different thing. It is usually municipal or groundwater that has been demineralised and then partially remineralised before bottling. Perfectly safe, and much closer to what your RO does at home than to a spring.
What the bottle adds
- Handling. Storage temperature, sunlight exposure and shelf time all sit outside your control.
- Cost. Per litre it is the most expensive water most households buy, by a wide margin.
- Plastic. A household drinking eight litres a day generates a great deal of it.
The part worth noticing
Premium bottled water advertises its mineral analysis. That is the whole pitch — minerals are what people are paying extra for.
Which makes it odd that the same household will often run a machine at home whose entire purpose is removing them. Not wrong, exactly. Just worth noticing.
Travel, unfamiliar supply, or any situation where you cannot verify the source. This is not an argument against bottled water — it is an argument against paying bottled prices for water you could make better at home.
