I don't find it necessary to buy water when it comes out of a tap.
As I don't like the taste of our WA water, I filter it in a filter jug, fill my own drink bottles (not plastic) and put them in the fridge.
Iced Volvo is my favourite, but the quality has definitely deteriorated in the last few years. The marshmallow is not soft and spongey and the biscuit is too thin and smaller. Not what we used to enjoy.