Do you really mean "20F", or was that just a typo?

Because if you really do mean F, this tells me something I didn't already know about additives to the US water supply.

Maybe his supply is at 800 bar.

Makes sense - high pressure to minimize loss of heat in transmission. Like with high voltage lines. Though this would be like skipping the final transformer and feeding 40kV straight into your house wiring, which I don't think anyone does...

C lol