Most adults will suffer third-degree burns if
exposed to 150 degree water for two seconds.
Burns will also occur with a six-second
exposure to 140 degree water or with a thirty
second exposure to 130 degree water. Even if
the temperature is 120 degrees, a five minute
exposure could result in third-degree burns.
75°C is definitely ok for a hot tube for a short session.
Sure but you can only do it once!
Seriously, even 75C water coming out of the tap would be dangerous and negligent.
It’s usually 96 if you have a boiler. No issues.
Temperatures beyond 50°C are an acute risk. 75°C can cause lasting damages.
Ever been to sauna? Especially the Russian one? There’s no risk if you don’t have heart issues.
I’m regularly going to a Finnish sauna with >80°C, but air with 100% humidity is not the same as immersing yourself in scalding hot water.
The Finnish sauna is dry. Russian and Turkish are wet with high humidity.
Forget 75°, just 65°C (150°F) will give you third degree burns in 2 seconds:
(°F)
I guess I’m long dead, lol.