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Do astronauts drink each their own pee or is there a common pee container where all pee get collected and processed? It's clear to me that the obtained water must be sterile, but even then, I imagine that people will feel psychologically better in the former case.

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  • $\begingroup$ There is only one water recycling circuit (+ systems for redundancy) on the ISS. I remember hearing a Podcast about the water and air systems on the NASA Podcast (Houston we have a Podcast) some time ago if you want to get a detailed description. $\endgroup$ – user38235 Jan 4 at 13:55
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    $\begingroup$ ...astronauts do not drink urine. $\endgroup$ – Christopher James Huff Jan 4 at 14:04
  • $\begingroup$ I thought the Russian side had a system that made water for other things from it. Kept getting clogged... $\endgroup$ – geoffc Jan 4 at 14:44
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    $\begingroup$ slightly related: Did astronauts on the moon poop in front of each other? $\endgroup$ – uhoh Jan 5 at 9:17
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    $\begingroup$ I strongly recommend "Packing for Mars," by Mary Roach. It's a fascinating read into all things astronautical, including human waste collection and recycling, effects of not washing for months, and all sorts of wacky icky things. $\endgroup$ – Carl Witthoft Jan 5 at 13:05
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At least on the US side of the ISS, there is one processor for all, the Urine Processor Assembly.

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Source: https://space.stackexchange.com/a/26629/6944 (see link for acronymology)

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