Sanitizing the Fresh Water Tank

Adventures in water tank sanitation. We've had our rig a few years, but we have only boondocked one time. This season I thought it might be a good idea to sanitize the fresh water tank, both to clean it and that we might go out to boondock a little more this year. Conventional wisdom seems to be 1/4 regular household bleach for every 15 gallons of capacity in your fresh tank. For those of you who have ever used bleach to purify water might look at that volume with a little suspicion. I know I did. But, something to keep in mind is that this is to clean the tank, so we're not really purifying the water. Dilute your bleach in a gallon or two of water, and take appropriate safety precautions. Chlorine Bleach is dangerous if you get it in your eyes, and I highly recommend wearing gloves (latex, nitrile, etc.) to keep from getting bleach on your hands. If you do get any on your skin, wash it off with water. That slimy feeling when you get it on you i...