On Tue, 29 Oct 2013 11:59:06 -0700, jamesgang
wrote:

....snip....
...just food for thought.

Not much in the way of viruses or bacteria that enter through your
skin. You'd make a better case about the accidental ingestion or
inhalation of the shower water. Even so statistics don't support much
worry about setting a hot water heater at 120.

I wasn't trying to make a case against setting water temp at 120

Just pointing out how 'contaminants' in water could pose a major problem.

Having been scalded [several times] by our hot water [set near max] I'd
like to see code REQUIRE the use of those mechanical faucets that force
the user to be aware that you are now setting the temp of your shower
pretty hot. And prevent a user from accidently bumping the hot/cold
balance way up. I've seen them in hotels and think they're a great idea.