Azzu

"no salt" as in neglible. Of course it isn't distilled water. And that's also what's in the coffee.

Wow xD

Idk, just, no? Bottled water or water from the tap or whatever all has no salt.

We do need a certain amount of salt, but it doesn't need to come from the water, drinks do not need to be isotonic to hydrate you.

Of course coffee counts. It's still water and has no salt. It will not be close to enough, but still.