Why Britain Has Separate Hot and Cold Taps
Tom Scott · Explainer · 3 min · 2014 · YouTube title: Why Britain Uses Separate Hot and Cold Taps
Why it's here
HN commenters treat it as the standard short answer whenever UK taps come up.
What it covers
Tom Scott explains why Britain historically has separate hot and cold taps rather than mixer taps, tracing it to how water was stored in tanks. He notes why the hot tap is not safe to drink from.