In my house you don't heat the water but it's been sitting in a metal water tank at equitorial latitude for hours so is generally quite warm for evening dishes.

In my house you don't heat the water but it's been sitting in a metal water tank at equitorial latitude for hours so is generally quite warm for evening dishes. Is it safe? Not for a restaurant where the temps need to get to parasite killing temps to pass muster.. but if I had to guess, the odds of getting killed by a bad-tempered cow outweigh it by 10x.