[smayr]

You are right, that's one thing I missed. Water bottle prices are determined on a country-level (I assume average bottle prices are higher in Moscow, I should show them ideally on a city-level) and I'm assuming people are buying 1.5L bottles for simplicity's sake. I am planning to provide a calculator soon to add more flexibility to the savings calculations.

[_-___________-_]

I've lived in many places where the tap water is not safe to drink, and in all those places, nobody except tourists was buying 1.5L bottles of water.

[keidjfks]

In Germany, tap water has super high quality but people still buy 1 liter bottles, because fancy name or sparkling. I appreciate the pro-nature advertisement!