Originally Posted by OldCoot
Dometic 300-series toilet. About 6" off of the floor. It's the water valve- is replaced one on both toilets now due to botched winterizations.
In my case, the water heater is lower than the front toilet as a whole. As turbo indicated, our rear toilet is on the same level as the water heater and in a travel trailer (which the OP has) where everything is on the same level, it could be a few inches lower than the water heater.
Again, semantics as I am not saying this is or isn't the person's problem.