No water means no oxygen, and also no hydrogen gas to power your generators. Im thinking of trying to collect polluted water in future playthrough when I expand the base, if theres strategies to make polluted into clean, that would help me out. The Water Sieve is a Plumbing building in Oxygen Not Included.

The hot steam geyser is kind of.. See More Tips and Tricks for Oxygen Not Included. Maybe in two tanks, for germy and non-infected polluted water. Oxygen not included Polluted Water Welcome to the Oxygen not included Polluted Water guide, where we will show you all the methods to obtain it and also the main uses (resources, food, plants, materials, buildings) of one of the most common resources in the game.

As long as the polluted water has no contact with oxygen, it cannot spread into my oxygen supply.
Speaking to how to deal with early polluted water: Use the bottle emptier to drop it … Add a few deodorizers above so you get nice oxygen.

It only generates a couple hundred grams per second.
It’s generally a good idea to set that in the early game because polluted water bottles will slowly pollute the oxygen …

Oxygen Not Included is a survival-sim game that takes place in space. In real physics, evaporation of water does not separate the atoms of the molecules into Oxygen and hydrogen. At some point you should have an automated water and heat reclamation system where polluted water plays a crucial role. It's purpose is to produce clean Water from Polluted Water. Yes, you can place a bottle emptier on top of those mesh tiles to let your dupes empty bottled polluted water. Polluted water giving off polluted oxygen is indeed a wrong physics model. Pointless? I'm not sure how I would use water from the polluted water vents, though.

With good ol' heavy CO2 laying on top of it and inhibiting the growth of microbes, I can safely store any amount of polluted water without fuss.

You’re the god-like player whose job it is is to ensure the survival of your newly-created space colony. To prevent rapid water shortages, use a liquid pump to send polluted water through a water purifier and then send it back to your clean water source. [Oxygen Not Included] - … Have fun surviving off hamster wheel power and the odd nugget of coal eggs the Hatches lay for you. (The germy tank is nicely used as a heat dump with aquatuners.) Plumbing connection for a basic water tank in Oxygen Not Included Bottle Emptier. Pump the Polluted Water into the Water Sieve via the connect input.

I know that I can pass the polluted water through a sieve to get plain water, but haven't found a way to get rid of the germs. Problem is not storing it, its running out of clean water all together. The Water Sieve will filter the water and expel clean water from the output. Agree with OP.