Ok, so I've been playing for a little while now. Before the thermal update, my plumbing systems were perfect. They worked fine. Now, with the new update, I suddenly had blocked pipes. So after a while, I deconstructed most of the pipes and replaced them with empty pipes. All of a sudden, a few minutes later, their all full again. I've probably destroyed all my pipes, and there's still water. (also its a closed system, so there's no more flow into it)
Thanks and also great game!
Just build a closed water system for toilets and showers that purifies the contaminated water, sends it through again, and so on.