Okay, if absolutely necessary (and you know who you are), you may not be able to make this change today. However, if you have not overly exerted yourself to a stench, take a day off, do a European shower and save some water and time. Who knows, you might like it!
Imagine if every person skipped one shower a week… 25 gal (avg water used for a 10 min shower) x 52 (one shower per week in a year) x 316 million people = 410 billions gallons saved in a year :).