"Purifying it, for the most part. And if you couldn't get purified water... well, you had to drink the irradiated stuff. Drink too much and you'll get sick... Drink enough over a long enough period of time and you'll get the kind of sick nobody can fix. So people had to rely on purifiers. You definitely didn't have clean water to spare for something like bathing." He grimaces a little.

"Sorry for being a little twitchy. Usually I'm more attentive than that."