Looking at the current situation, the answer becomes immediately obvious.
Let's think about what prompted the development of the automatic water pump in the first place.
First of all, the water pump 'itself' isn't that complex a machine to replicate. It's just something that sucks in water and spits it out. The water pumps of the 21st century aren't that different from today's water pumps.
The problem was the... engine that drives it.
Wetlands that needed water pumps were abundant, and water pumps could be replicated in any quantity, but there was no power to drive them, so they had to be operated using people or horses. The efficiency? Naturally, it was poor.
After the Porter was created, we tried connecting the Porter's PTO (Power Take Off) to it.
Still, the absolute lack of power was unavoidable.