Originally Posted by Dickandvicki
I do have another question. When my AS is in storage (not winterized) should I keep water in the fresh water tank or drain it out?
Depends. During hurricane season, I leave my fresh tank full for the entire six months. But since I have camping trips scheduled for each Federal holiday during the season, that means the water is only sitting for about two months or so at a time, not six months. But during my Thanksgiving weekend trip, I try to use up the remaining water, so there's less to drain at the end of hurricane season.
To forestall stagnation, I add a SMALL amount of chlorine to the water stored in the tank. Chlorine does
evaporate out of the water in a few days (look at how often chlorine has to be added to a swimming pool), and a Britta filter on my galley faucet removes any residual chlorine taste that might remain. EPA Safe Drinking Water Primary Standards call for a maximum chlorine residual in your drinking water of 4 parts per million of Cl2 (chlorine), or 0.8 ppm of ClO2 (chlorine dioxide). So if I calculate the amount of chlorine so that I add less than 4 ppm chlorine initially, whatever evaporates out must
leave less than 4 ppm residual so it's still safe to drink even if some of the chlorine hasn't evaporated out.
And as long as ANY measurable chlorine remains in the water, you'll get NO microbial growth in the water.