It depends on where you live and the time of year. I've lived places where in the winter, the tap water is just a couple of degrees above freezing. I've lived

It depends on where you live and the time of year. I've lived places where in the winter, the tap water is just a couple of degrees above freezing. I've lived in places where in the summer I've measured the tap water at over 90 degrees. He must live somewhere that doesn't get to any real temperature extremes.