this post was submitted on 13 Feb 2026
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If I know there is even 0.00000000000000000000000001% piss in tower full of water I ain't drinking it
Your acceptable concentration is about 1*10^-28.
The world's largest freshwater lake is lake Baikal, with a volume of 22995 km^3. Adult humans have a bladder volume of about 350 ml. If a single person pees in this lake once, that's a concentration of about 1.5*10-17, or about 150 billion times too pissy.
Reverse osmosis and distillation have fairly complimentary strengths and weaknesses. RO removes about 99% of contaminants, distillation removes about 99.9%. two passes each of RO and distillation and your treated single-piss lake Baikal water is now down to about 1*10^-27 piss, or still about 10x too pissy for you.
This analysis assumes that you consider piss to not include the water molecules that carry it. If you have a "once piss always piss" policy, I'd be willing to bet that a pretty significant portion of water to have gone through an animal at least once.
My piss goes to a leach field by way of a septic tank. So no worries about that. Got municipal source repumped from a station about 10 miles west, so I dunno what the pipe conditions are here yet. Have only had to replace one water heater line so far
Prepare to die from dehydration, because man do I have some bad news for you…
Yep, at those percentages there's likely an amount larger of piss in every breath you take indoors. Always remember, it's the amount that kills (or tastes like piss)