One of the things I liked about living in Japan 20 years ago was the on-demand water heater that supplied the kitchen sink. Turn it on, and you had instant hot water for doing dishes, cooking, washing ...

Tap water in the US is generally safe, but in certain areas it can have a funky taste. Tap water can also contain traces of pesticides, VOCs, lead, and dirt, all of which you don’t want to ingest no ...