Brett, if indeed this is a PO add-on rather than original equipment, that is very good news for me.
I don't know just how it's hooked up. I'll check closer tomorrow when I go to the trailer location (10 miles from my home). All I've seen is a 3" flexible hose under the bathroom vanity, running over to the macerator pump in the corner closet. If it's tapped into the toilet or tank, I may just have to leave it be.
If I can remove it without a lot of hassle, I'll do that.
If I can slip "Airstream" into the description, it should fetch a healthy price on Ebay.
Actually, if I do remove it, I'll offer it up free to any member who might have use for it.