Not surprisingly, Evian should make it as easy as possible to order more water. The donor system monitors how much water you have used (you can check it through a mobile app), and all you have to do is press a dash button on the device to order more cans.
Do not expect to buy a Renew immediately. Only 200 people in London and Paris will receive it as part of a pilot program that will debut in May and be "wider" sometime in the future. However, it is a promising start, and this is part of a broader environmental plan that includes manufacturing all 100% recycled plastic plastic bottles from Evian by 2025. This does not mean that Evian went completely out of control (clean tap water consumes zero.) Disposable plastic eventually), but this could greatly contribute to minimizing Evian's impact on the planet.