Originally Posted by nachtmsk
Yeah, dumping some bleach down the drain will clean up the gray tank, but is there any concern about something being in the water lines (fungus) that would need to be handled? I guess not, otherwise the same issue would happen to people with their home water lines, and you never hear of that.
I think you have a very legitimate concern.
Home water lines usually have a greater volume of water going thru them. It's not just sitting there like it some times does in an RV.
That's why I sanitize our water system each spring and usually before each trip.
The fresh water tanks on an RV never
gets completely emptied. Some of the lines have a loop or low spot that water can set there and get mold growing. So in my opinion, that whole thing with the fresh water system is a place for trouble to start if not properly disinfected periodically.