system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5:If the international space station can retain about 93% of the water used on board, why don't we implement some of the technology used in everyday homes?
gpt
It is a very specific and expensive technology that isn't well suited for home use.

If we absolutely needed to conserve water like that, we would, but tap water is _really_ cheap (in the USA at least).