VLC! No ads ever, that’s insane!

Your response made me chuckle, thanks for that!

Nearly all of our faucets are single faucets, especially in the kitchen. European infrastructure isn’t quite as antiquated as you seem to think! Lots of buildings here in France were built after the 70s, or were renovated at least. I think my water heater was made less than ten years ago.

The point about not drinking hot tap water holds because of the fact that we store this hot water for long periods of time and bacteria develop in warm environments, it doesn’t depend on the age of your plumbing.

I’m not sure that’s a myth, everywhere I search I find reasons to not drink hot tap water:

• The heated water may cause the plumbing to release harmful substances such as lead and nickel
• Cold water is fresher. Hot water stays in the plumbing system for a longer period of time to get heated. Longer stagnation time in the system may cause higher bacterial levels
• Hot water is exposed to more pollution sources since it passes through additional tanks or heating systems.
• The level of microorganisms is higher in hot water plumbing

From this page

(PS : I’m talking about France, where I live, where we mainly use water tanks to heat and store hot water. Cold tap water is perfectly fine to drink, on the other hand.)