Water Purifier
The Water Purifier is a 250-credit machine that purifies the water in one container overnight. Each night it removes a limited amount of contaminants, much more from dirty water than from nearly clean water, and never goes above its purity cap, which is 99% by default. It draws 4 power per night from an Energy Cell.
| Item ID | water_purifier |
| Value | 250 credits |
| Base power draw | 4 per night |
| Slots | Power Source, Modules, Water Container, Note |
| Modules | Universal modules only |
| Description | “Purifies the contents of an inserted Water container. Requires Energy. Overnight.” |
How do I use it?
- Place the machine and put an Energy Cell (or another power source) in its power slot.
- Put a water container you own in the Water Container slot. It must be a liquid container with something in it.
- Sleep. The cleaning happens overnight, only if the power source has enough charge.
- The tooltip then shows “Contaminant Removed (Last Night)” in millilitres. Power is only used on nights when something was actually removed.
The Note slot accepts a sticky note, which holds the official instructions.
How much does it clean per night?
The amount removed per night is a budget: for a container of up to 10 litres, 0.3% of its volume plus 25 ml, multiplied by 1.25 and by a dirt multiplier. The dirtier the water, the larger the multiplier:
| Current purity | Dirt multiplier |
|---|---|
| 98% or higher | x1 |
| 94% | x2 |
| 88.5% | x5 |
| 80% | x10 |
| 62.5% | x15 |
| 37.5% or lower | x20 |
Values between the points are interpolated. Performance bonus from modules adds to this multiplier (a +16 Performance bonus adds 0.16 before the 1.25 factor). For example, a 10-litre container at 98% or better loses about 69 ml of contaminants per night, while one at 80% loses about 690 ml. Volume above 10 litres does not increase the budget.
Removal order: larger particles first. Mineral, Chemical Contaminant and Heavy Metal are removed last. Water itself is never removed, and neither are liquids the machine cannot remove.
What is the maximum purity?
The cap depends on the machine’s total Quality bonus. The tooltip shows it as “Max Purity”.
| Quality bonus | Purity cap |
|---|---|
| under 15 | 99% |
| 15 | 99.15% |
| 25 | 99.35% |
| 50 | 99.65% |
| 75 | 99.8% |
| 100 | 99.9% (Pure Water) |
| 200 | 100% |
A cap of 99% means you can reach High-Quality Water but not Pure Water. The in-game note says Quality counts at a 0.5 ratio for this machine, so check the tooltip’s Max Purity after fitting modules instead of adding numbers by hand.
Which modules work?
Only universal modules fit. Their listed values:
| Module | Efficiency | Performance | Quality |
|---|---|---|---|
| Performance Module | 0 | +16 | 0 |
| Quality Module | 0 | 0 | +8 |
| Refinement Module | -15 | -8 | +25 |
| Neural Core Module (Capped) | -100 | +100 | +50 |
| Neural Core Module (Uncapped) | -100 | +200 | +100 |
Efficiency changes power consumption, Performance changes the amount removed per night, and Quality changes the purity cap.
Where do I get one?
- Dr. Jackson sells it once you buy the Water Trading network upgrade. If you own no Water Purifier, he stocks one every visit; if you already have one, there is a 25% chance per visit.
- Retired Water Merchant visits every week (days 3, 10, 17 and so on) if you started as a Water Merchant or bought Water Trading, and always brings one, along with a Moisture Farm and Water Testing Strips.
FAQ
Does the Water Purifier make Pure Water? Not by default: its cap is 99%. You need Quality bonus (see the cap table) to reach 99.9%.
Does it remove heavy metals? Yes, last in the order. Filters cannot remove them at all.
Can it purify more than one container? The machine has one Water Container slot, so one container per night.
What if the water is already at the cap? Nothing is removed and no power is used.