Water Analyzer Bug/Feature
I think I've found a nice little bug/feature of the water analyzer.
If you use the "Analyzed Water" recipe, the game will select a non-analyzed water. Performing the recipe should spit out either "water (infected)" or "water (sterilized)". If you use the "Analyzed Water" recipe, and have a lot of unidentified water, the results will be infected a lot, and then the input water will cycle back around to "water (infected)" after a short while. If you look in your inventory, the water will either be "water" or "water (infected)". If you destroy the "water (infected)" and then use the analyzer again, all the water will be sterilized. This means that the "Analyzed Water" recipe only pulls infected water (analyzed or not) if it exists, and then does sterilized. This means you can use the "Water Analyzer" to quickly determine which water is safe without ever having to boil anything.