mbopp wrote:
Another vote for a macerator pump. I'm OK on the black tank, but I pump the gray water into a 30-gallon barrel mounted in the truck bed, drive to the dump station, and empty it via a 1-1/2" gate valve & hose.
I store my FloJet Waste Macerator in the trailer and could also use it to off load grey water but mostly only off load macerated black water in the rare case the BW tank might fill while we're still camping. Since my portable waste tanks are smaller 7 gal Aquatainers that weigh just 60 lbs when full I can easily lift them into the truck, a single 30 gal tank there's no way. To off load GW I usually just gravity drain it into Aquatainers sitting on the ground at the back of the truck. K.I.S.S. :)