I'd stay away from public toilets then - don't want a case of the ... itchies ...
We have more of a problem with windows sweating in winter than toilets in summer. A/C keeps the humidity down, and I never open the windows unless the humidity outside is less than 60%. This place has so much moisture in it it's not even funny.
With my i/r thermometer, our well water is 54° - it's ice cold. 120' down the well till you hit water. My 4 year old pressure tank I bought from Home Depot already looks like a '76 Pinto in '78.
When I just the refrigerator water tap, it's so cold you can't drink it too fast .. or your head will explode.
Must be in the low 30's by that point. I'll have to check that.