Are you sure it is bacteria?
Water with high iron content can also cause rotten egg (sulfur) smell from water heaters which have a lined steel tank (Suburban brand) and a second anode rod.
As the anode rod wears out, the rotten egg or sulfur smell will get bad..
Not sure if aluminum water heat tanks (Attwood) have the same problem.
For Suburban tanks the fix is replacing the anode rod with a new on, do not cut off the rod and put the plug back in, doing so will drastically shorten the life of the tank.
Ideally, the way to fix high iron content water is through a iron removal system, in a pinch a decent water softener can be used although may not be totally effective.
Rather than guessing, I would recommend getting the water fully tested by a professional water testing service. Make sure the test checks for bacteria along with iron/mineral content. This way you KNOW FOR SURE what you are dealing with.
If bacteria is present in the water, then the campground should be held responsible for fixing the problem.. Either by treatment or new well and sanitizing their water system.
If they refuse to do so, I suggest you consider finding a different campground that values your well being..
Have had several mobile home courts around my area shut down due to bad water..
