Big shout out to TAC life support! I've spent a good 2 hours now looking over all the math and reasoning behind your values, and it's great to see you made a serious effort to simulate realistic consumption/storage/waste/etc. I noticed that a kerbal will produce more waste water than they drink water, (0.2417 U/day Water in, 0.3078 U/day WasteWater out, 127% more), and the water purifier runs at 90% efficiency, resulting in being able to infinitely recycle your own waste water into drinking water. Do you know if this is true in real life too, in the ISS? Do they only need to resupply the ISS with food, and simply continuously recycle the water they drank + water from the food they eat?