I thinks it’s more lead )and other metal) accumulation but yeah ……
The first time I remember hearing a specific , not generic, concern was when legionnaires became A thing several decades ago. People were turning down their water temperature to save money. But legionnaires is more tolerant of heat than most other germs, so there’s a window of opportunity where the water is hot enough to kill off most diseases but cool enough to let legionnaires flourish.
Even today, you’re supposed to keep hot water at 120°F at the tap to prevent scalding but your water heater at 140°F to kill off legionnaires. Most people dont
I thinks it’s more lead )and other metal) accumulation but yeah ……
The first time I remember hearing a specific , not generic, concern was when legionnaires became A thing several decades ago. People were turning down their water temperature to save money. But legionnaires is more tolerant of heat than most other germs, so there’s a window of opportunity where the water is hot enough to kill off most diseases but cool enough to let legionnaires flourish.
Even today, you’re supposed to keep hot water at 120°F at the tap to prevent scalding but your water heater at 140°F to kill off legionnaires. Most people dont