I just found it very interesting to see how easy this can be and without any sophisticated modern technology.

Yes, me too, it is what one would usually think, but all that is needed, apparently, is activated carbon. In my house there was a filter that worked with a carbon stone of those, if I remember correctly, a couple of years ago, but eventually it had to be replaced and the price was also very high. One must do the math.

But yes, I would opt for this method too. It's on my list.