I think the only realistic filter that comes close to it would probably be reverse osmosis. Expensive, high maintenance, and still isn’t 100% perfect. Seems to get 95-99% and some places say that you can get more if you further filter that water through activated carbon. Downsides are you lose any of the good stuff from the water and would need to run it through something to re-mineralize the water… Completely unrealistic in the real world. Might as well just buy Distilled to drink and cook with but then you have to deal with microplastics from the jug.
I’m just going to drink whiskey or something so I can at least have fun while what I consume kills me.
Remove all the poisons. Saw another idea to add ivermectin which will help with many ailments but also adding moringa powder. Cleans the water but also adds nutrients.
I would like to see water fountains both decorative and drinking fountains open again. We used to have them all over the city. There was no need to carry plastic water bottles, you could grab a drink every where. It goes without saying our water should be clean and readily available to all. This would cut down if not eliminate plastic bottles.