"Despite the growth in reusable water bottles, keeping them refilled is tough. Ironically, consumers either end up buying a plastic bottle of water, are forced to use a toilet to refill, or feel obliged to buy something from a store before asking for a refill of water."
in the English speaking world outside the US, the "toilet" refers to the entire bathroom, not the piece of porcelain. This also explains why "use the toilet" is considered crude in the US but not outside. In the US it refers to the physical act of defacating, but elsewhere it is equivalent to "go to the bathroom"
What?