The lions are being bi now? They must have learned it from the tourists!!!

Don’t be too afraid, breathing in a bit of HF never hurt anybody.

I see three.

Always good to do a quick search of the literature to make sure your intuition about something is actually correct; I too thought “no way” when I first saw your question.

I don’t think only heating water to 500C would remove more harmful chemicals than a typical full treatment process, as they have a lot of steps to filter various things out, but I don’t have a source for that.

Even if it did, there’s still the issue of heating up the water taking an enormous amount of energy, which is probably a dealbreaker. My local wastewater plant treats 40 million gallons a day, which by a quick calculation would take 150 GWh to heat, 83% the daily energy consumption of the whole of Minnesota. That can be reduced significantly with heat exchangers but even 1% of that would be far too expensive.

Yes; this is something that has been studied. However as other commenters have said it requires a lot of energy, and is better suited for processing smaller quantities of water with a high level of PFAS contamination than massive quantities of water with an extremely low level of PFAS. It’s also not a standalone solution, as plenty of harmful chemicals survive heating past 400/500C (heavy metals like cadmium, lead, and mercury do not break down at any temperature).

Just wait until webcams start cryptographically signing image frames to ensure their authenticity.