Hot water temps revisited
A few months back there was a thread about properly setting hot water temps to prevent scalding. Recommended temp was 115F. The gist of the discussion was that setting above this puts individuals at risk of scalding and the plumber at risk of defending his negligence in a courtroom.
Now comes the article in the Journal of Light Construction that indicates as many as 10,000 people die annually in the US (the author claims this is a middle of the road estimate, the actual number might be substantially higher) as a direct result of hot-water system based bacteria. Apparently 120F is the perfect temp for the legionella bacteria. He claims that the hot water temp should be set to 140F. Setting the temp below 140F put users at risk of serious illness or death. The article goes on to recommend end point anti-scald valves.
So, apparently we're stuck between a rock and a hard place. I don't know the answer, don't shoot the messenger.