Polluted Water

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This article may contain outdated information that is inaccurate for the current version (Automation Innovation Pack Update). It was last updated for the Launch Update.

Polluted Water
Polluted Water is dirty, unfiltered Water.
It is not fit for consumption.
Polluted Water.png
Chemical Symbol
Melting point
Condensation point
Freezing point
-20.65 °C → Polluted Ice
Vaporization point
119.35 °C → Steam
Polluted Oxygen
0 (Very Soft)
Specific Heat Capacity
4.179 (DTU/g)/°C
0.580 (DTU/(m*s))/°C
Light Absorption
70 %
Mass per Tile
1000 kg
20 g/mol
Mixture, Water Based, Liquid
Overheat Temperature

Polluted Water is the most common naturally occurring liquid on the asteroid, especially in the Swamp Biome, where it also fills caves with Polluted Oxygen. Polluted Ice in the Frozen Biomes will also start melting into cold puddles of Polluted Water once they are breached.

Polluted Water creates negative effects if a Duplicant walks or is submerged in it by adding onto their stress. It can be created by Duplicants not reaching a toilet in time, or by stress-vomiting. It can also be created as a by-product of the Algae Distiller, or through certain amenities such as Lavatories and Showers.

Despite being dirty, polluted water is more useful than it seems. It is better coolant than pure water, due to 40 degrees wider temperature range. Polluted Oxygen emission is not strictly negative, since it can be filtered into pure oxygen. Polluted water can irrigate certain Plants that need it. And when put into a Water Sieve, it can be purified into regular water, thus conserving it.

Emissions[edit | edit source]

Polluted Water will emit Polluted Oxygen, even in a vacuum, visualized in-game by a green bubble that rises from the water. The bubble itself will burst and add 100 grams of polluted oxygen to the atmosphere. Like Slime and Polluted Dirt, it will stop emitting polluted oxygen when the pressure above it reaches 1.8 kg. Specifically, four times a second it has a 0.1% chance of converting 0.1% of the surface cell's mass;[1] so with a full (1000 kg) surface cell, it will produce approximately 2.4 kg per cycle. However, because of the low probability, the production is not consistent.

The emission of polluted oxygen is calculated on the first 1000 kg of polluted water. Having less will reduce emission, having more has no effect. So for production of Polluted Oxygen it is better to spread the polluted water tiles out rather then stacking them up.

Usage[edit | edit source]

Production[edit | edit source]

Tips[edit | edit source]

  • Polluted Water can be pumped via Liquid Pump into a Water Sieve and be purified with a filtration medium, turning into pure Water that can be deposited from a Liquid Vent.
    • Filtering polluted water does not remove any germs that may be present. The germs will remain in the clean water unless additional steps are taken.
  • Most naturally occurring and produced Polluted Water contain no germs and should be kept separated from infected water.
  • A Lavatory produces more Polluted Water than by a Duplicant not reaching a toilet in time (Around 6x as much).
  • Even if polluted water has Food poisoning germs present in it, if a duplicant becomes submerged in it, they wont have any food poisoning germs present on them.

See also[edit | edit source]

History[edit | edit source]

  • RU-284571: Water and Polluted Water now have the same SHC so that the water purifier won't magically cause a loss of energy.

References[edit | edit source]

  1. Polluted Water conversion to Polluted Oxygen is defined in Game.SimUpdateFirst(). To verify, the values can be changed to make it convert more rapidly.