The macerator drains into my home septic system through means of a toilet on the same end of the house as my driveway. I just run a 1 inch water hose from the pump to the toilet and shove it down the drain of the toilet. Theres enough force to the pump that it makes the climb up into the bathroom window from the ground which is about 5 feet. The pump has a grinding blade similar to a blender or coffee grinder in it. It cuts all the waste up small enough that it hasn't given us an issue with our home septic and with a family of 6 using our home bathrooms calling the septic guys out isn't a big deal.
As for the slope of home versus the dump.... my driveway slopes to the road which actually puts the nose of the RV lower then flat ground would. Our tank monitor shows the tanks empty now however, Im not going looking in there to double check.
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