Glass has a rare property among packaging: it can be recycled indefinitely, without loss of quality, in a relatively simple process. Recycled PET loses grade with each cycle; aluminium keeps much of its quality; glass is the only one that comes back exactly the same. Today's glass bottle can be, literally, the bottle of twenty years from now.
Glass's central property
Silica, soda and lime make up a raw material that accepts repeated remelting without degrading. That is what separates glass from PET, which loses quality with each recycling, and from aluminium, which loses less, but still loses. Recycled, glass returns to the same condition as its origin.
How glass recycling works
Selective collection, with separation by colour; crushing into cullet; remelting in a furnace at around 1,500 °C; and moulding a new piece — a bottle, a jar or flat glass. The cycle is known and mature.
The Brazilian picture
Brazil recycles around 25% of the glass it produces, against a European average close to 76%. The lag is explained by still-incipient selective collection, a lack of incentive, and the concentration of the chain. Ways out are under way: municipal programmes, partnerships between producers and cooperatives, and the reverse logistics required by law.
The role of premium brands and the consumer
Premium brands in glass carry heightened responsibility — lower volume per unit, higher added value. Some operate their own return programmes; others support cooperatives. On the consumer's side, the gesture is simple: separate the bottle, send it to selective collection or a drop-off point, and, when it makes sense, reuse it at home.
The honest comparison
Against PET, glass wins in recycling quality and loses in weight — plastic's lighter transport emits less. Against aluminium, it wins in product purity and loses in weight and in effective recycling rate. The sober conclusion is that glass is the right choice for premium water in fine dining, without being a universal solution for everything.