I didn't stutter. I was responding to a question of why would there be water tanks in the engine room.
Yeah, I know. And I hoped to emphasize the (faulty) assumption in the original question that this was "the" engine room. Just as in TOS, and just like you imply, "engineering" would be a vast entity with lots of "somewheres" within it. Not just a single location with a single function, or with multiple functions for that matter.