I'd argue that the various tanks are not very well matched in their capacity. The fresh water tank is 12 gallons, black water 9 gallons (If I remember right...) and grey water is 26 gallons. I almost always run out of fresh water before I fill any waste tank.
-- Dan Meyer
Dan, while boondocking
using your freshwater tank, that would in fact, be the case. But, when you're on city water, that 26 gal gray tank comes in really handy for extending the time between trips to the dump station. When I had my Scamp 16 CD and I was hooked up to a city tap, I could live pretty recklessly for about 4 days and use as much water as I needed before I had to dump. Had I been frugal with my water use, I could have gone nearly a week without dumping.
I also second Donna's thought about the weight
. The fresh water tank, when full, puts nearly 80 lbs under the curbside rear lazarette, aft of the axle
and on the extreme outboard curb side. Anything larger located in that spot could easily become a tongue weight/balance issue.