Though the water is irradiated, doesn’t mean a shower can’t be pleasant. At least that was the thinking of the Hyrdo-Protecto company, who saw a way to turn fear of atomic radiation into a profitable venture. Even in a post-nuclear world, they knew cleanliness is next to godliness, or at least a way to barter for canned goods.
While it was a failure in the 50’s, I see this being revived and marketed to people who travel to India, where the microbes in the water are the size of peaches and often talkative.