Eli5 If warm water is generally better for cleaning things, including our skin, then why do we use cold water to brush our teeth?

Question

Eli5 If warm water is generally better for cleaning things, including our skin, then why do we use cold water to brush our teeth?

In: 14

Answer 1

Historically your hot water came from a big storage tank upstairs in your house which potentially means it’s been there a while and not safe to drink.