Of course, we need government action! But do you know the micro plastic content coming from tap water? Do you have much of a choice as to what you are consuming? Wouldn’t you want to filter it out?
As far as technology, this isn’t pie in the sky, it seems fairly simple and I wouldn’t be surprised if home-made solar punk versions start appearing in zines and online forums.
Why not just have our local municipal water supplies filter out the micro-plastics why is drinking water an individual problem that each household has to solve themselves?