[jorvi]

Probably because the overwhelming majority of countries chlorinates their water to various degrees because they don't have the exceptional plumbing quality needed to otherwise guarantee potability.

Countries where the tap water is drinkable without chlorination have quality that exceeds bottled water, and it might even be sourced from the same aquifers.

[loopdoend]

The best tap water on earth is in Iceland. Volcanic filtered and so clean tasting... one of the joys of being in the country.

[viraptor]

Once you get over the sulfur smell anyway... (or was that only the northern thing?)