Hard water specifically. I suppose that water softening is detrimental, then. I also wonder if this means microplastics can be used to remove lead by a similar mechanism. Maybe not considering that typical Pb levels are a lot lower than Ca in hard water.
Well where are you gonna store the water while it cools? I don't know of anyone that keeps glass bottles around anymore.
So the water is gonna end up either going into a plastic cup or bottle, totally defeating the purpose, or it can go into one of those fancy thermos bottles, which are soldered together with lead based solder.
First sentence, "Tap water nano/microplastics (NMPs) escaping from centralized water treatment systems are of increasing global concern, because they pose potential health risk to humans via water consumption." This article is focused on micro plastics in human consumption not the environment.