Showers are way over-rated. I just finished hiking for 17 days with only one shower for the entire trip. I'm not condoning showering twice a month, but you definitely don't need it after riding to work or every day for that matter. Imagine the water that could be saved if the average household showered every other day...it would be pretty magnificent. I think in the future you'll start to see that showers will use grey water rather than fresh water. Anyway...don't sweat it (pun intended).