Really Hard Water with a Lot of Iron

westend, I hear ya with the bleach. We've put vinegar in the fresh tank and are leaving it in the pipes overnight to try and flush out some of the crud. I've read regular softeners really don't work on iron or sulfur, they're two different beasts. The paper filters are a great idea but this water is so bad I'm afraid we'd go through one per day!

My experience is that standard resin bead softeners will remove iron. I can see that a problem with standard RV softeners is that there isn't much surface area because of the size of the bead tank. Sulfur is probably an odor thing caused by break down of organic or mineral causing sulfur dioxide, a most odoriferous chemical and difficult to remove. A small micron carbon filter will probably do a fair job of it.

Has the campground water ever been tested where you are? From the description, it sounds like it must be very bad, almost non-potable. I'm guessing you may have to weigh your options of installing a large sediment filter before it enters the RV system or delivering clean water into the RV. It may be more cost effective to invest in a water barrel and pump setup, using a good source of water, and delivering that to the RV in weekly amounts than trying to fight, through filtration, the bad campground water.