where do you fill your water tank??

Thanks for all the tips! I had not thought of lowes/home depot - garden area would be easy! Right now I'm in AZ - public campgrounds are few and far between. And I soooo rarely use my black tank that I don't dump very often. I have a very small RV - Rialta - tank holds only 15 gallons - enough for a couple good showers between the occasional campground I do find.

Thanks again!

Kelly