> I assume that this is a just alarmist journalism, since water for tea/coffee is heated to boiling ...
Boiling at elevation is different to boiling at sea level.
To kill Cryptosporidium (etc) you need a rolling boil for 1 minute (no one does this) ... and that's at sea level. At > 2km up you need to run that for > 3 minutes (and absolutely no one does that).
And all this is before I even get started on the woefully uncivilised idea of using 100C water for green tea.
Boiling at elevation is different to boiling at sea level.
To kill Cryptosporidium (etc) you need a rolling boil for 1 minute (no one does this) ... and that's at sea level. At > 2km up you need to run that for > 3 minutes (and absolutely no one does that).
And all this is before I even get started on the woefully uncivilised idea of using 100C water for green tea.