We wash all home-grown and purchased produce in clean, preferably running water. No soaps or other commercial concoctions are needed or desirable. We wash before peeling, and then rinse again briefly before cutting root veggies. The links below advocate a similar approach. The third suggests only distilled water be used. I think not.

http://www.foodsafety.gov/~dms/prodsafe.html

http://nutrition.about.com/od/ahealthykitchen/a/washveggies.htm

http://www.umext.maine.edu/onlinepubs/htmpubs/4336.htm

maeve