Video Guide
In pursuit of pure water - Probably Stolen playtest challenge playtrough - Episode 1
Table of Contents

In the dystopian sprawl of Probably Stolen, surviving as a shopkeeper requires more than just luck—it requires a steady flow of high-demand goods. Among the various trade routes available, water trading stands out as one of the most rewarding yet complex systems in the game. Learning probably stolen how to make pure water is not just a side activity; it is a primary strategy for early-game stability and late-game wealth. Whether you are dealing with Gutterflow or aiming for that elusive 100% purity, understanding the mechanics of filtration, testing, and market demand is essential for any aspiring Water Merchant.

Understanding probably stolen how to make pure water involves a multi-step process that transitions from basic chemical tablets to advanced moisture farming and high-tech modular purifiers. In this guide, we will break down the essential perks, the equipment you need to invest in, and the specific purification workflows that turn toxic sludge into liquid gold.

Setting Up Your Water Trading Foundation

Before you can start refining liquids, you need to unlock the necessary infrastructure through the Wild Network. The game doesn't hand you a clean supply of water; you have to earn it or steal it. The first step for any player is to visit Joe Wild and check out the available perks.

According to community reports, there are three essential perks you should prioritize to maximize your efficiency:

  1. Water Trading (255 Credits): This is the mandatory entry point. Unlocking this perk provides you with the Water Trading Kit and, more importantly, allows you to purchase specialized machinery from Dr. Jackson’s store.
  2. Powerline Hijack: Almost every piece of purification equipment requires electricity. By hijacking the power lines, you eliminate the daily cost of running your machines, which significantly boosts your profit margins.
  3. Commercial Grade PSU: This perk allows your machines to charge twice as fast. In the water business, time is money, and faster charging means you can process more liters of water overnight.

Once these perks are active, you need a source. The "Gutterflow on Tap" and "Rustwater on Tap" upgrades provide an infinite, albeit low-quality, source of water via a faucet in your shop. While this water is initially terrible, it serves as the raw material for your entire operation.

Understanding Water Quality and Identification

In Probably Stolen, water is categorized into several grades. Your profit is directly tied to these quality thresholds. Selling low-grade water as a premium product is a quick way to lose customer respect, as they can test the water on the spot.

Water Quality Grades Comparison

Water Grade Purity Threshold Market Value Best Use Case
Gutterflow < 20% Very Low Raw material for purification only.
Rustwater 20% - 50% Low Early game trading or refining.
Ghost Water 50% - 85% Moderate The standard "raw" water for mid-game refining.
Base Water 85% - 95% High The most common grade for consistent sales.
High Quality 95% - 99% Very High Target grade for maximizing profit vs. effort.
Pure Water > 99.9% Extreme End-game goal; requires advanced modules.

To identify these grades, you have two primary tools. The Water Testing Kit is a cheap, manual method using strips. However, veteran players recommend upgrading to the AquaScanner as soon as possible. The scanner requires no batteries and instantly reveals not just the purity percentage, but also the specific contaminants present—such as heavy metals, microbes, or chemical waste.

Don't Scam Your Customers While the blue labeler allows you to change the declared quality of water, customers in the Playtest often test the water themselves. If the label doesn't match the contents, you will lose significant reputation, making future trades harder.

The Purification Workflow: From Rust to Pure

Refining water is a science of removing specific contaminants. You cannot simply jump from Rustwater to Pure Water with a single machine without significant time and energy investment. Instead, a staged approach is required.

Step 1: Microbe Elimination

Before putting water into a purifier, use an Ultraviolet (UV) Lamp. Community experience shows that the UV lamp is a "free" way to instantly remove all microbial contaminants. It doesn't use cells or charge, and by cleaning the microbes first, you reduce the workload on your more expensive filters and purifiers.

Step 2: Chemical Neutralization

If your water has high chemical or organic waste, Water Purification Tablets are your best friend. A single tablet can significantly reduce chemical contaminants, often bumping Ghost Water up to Base Water instantly. Note that tablets are individual household goods; you can even sell the empty jars for a few extra credits.

Step 3: Mechanical Filtration

The Water Pitcher is the most versatile tool in your shop. It can be fitted with three types of filters:

  • Cotton Fabric: Cheap and effective for physical contaminants.
  • Standard Water Filter: Good for a slight purity boost but has limited durability.
  • Advanced Water Filter: This is a rare trade item that recovers 50 durability each day. It is highly recommended for long-term sustainability.

Step 4: The Purifier Machine

The Hydrotech Micro Purifier is the workhorse of the water trade. It removes all types of contaminants but suffers from diminishing returns. As the water gets cleaner, the machine removes fewer contaminants per cycle.

Contaminant Level Purifier Efficiency Durability Cost
High (Rustwater) High (150ml+ removed) 1 point per 100ml
Medium (Ghost Water) Moderate (60ml removed) 1 point per 100ml
Low (High Quality) Low (Trace amounts) 1 point per 100ml

Advanced Strategies: Moisture Farming and Modules

If you want to truly master probably stolen how to make pure water, you need to stop relying on the faucet and start farming the atmosphere. The Moisture Farm is an early-to-mid-game machine that pulls water from the air. Depending on the modules installed, it can produce up to a liter of Base Water or Ghost Water every night for free.

Enhancing Performance with Modules

Your machines have sockets that can be filled with modules to alter their behavior. To reach 100% purity, you will need to stack Quality Modules.

  • AI Modules: These are rare contraband items that provide massive boosts to machine intelligence and efficiency.
  • Overcharged Modules: These provide 200% of the base stats but come with a 10% chance of ruining the machine on use.
  • Refinement Modules: Specifically designed to increase the purity output of the Hydrotech Purifier.

Negative Feedback Loops Some modules have a "Negative Feedback" perk. If you surround these with other modules that have negative traits, they will receive 25% of those penalties, potentially ruining your purification efficiency. Always check module descriptions before slotting them.

Maximizing Profit: Containers and Market Events

Making the water is only half the battle; the other half is selling it. In Probably Stolen, the container you use matters just as much as the liquid inside.

Container Efficiency Table

Container Type Capacity Space Taken Trade Value
Small Bottle 450ml 1 Slot Low
Standard Bottle 750ml 1 Slot Moderate
Large Bottle 2000ml 2 Slots High
Water Jug 6000ml 2 Slots Very High

Jugs are the most efficient way to store and sell water. A single jug takes up the same inventory space as a large bottle but holds three times the volume. Furthermore, high-tier buyers (identifiable by their pink backpacks or upper-level status) will often come looking specifically for jugs of High Quality or Pure Water.

Timing the Market

The economy of the space station is volatile. Keep an eye on your nightly logs for two specific events:

  1. Water Supply Crisis: This increases the price of all water goods by a massive margin. This is the best time to sell your stockpiled Pure Water.
  2. Ice Comet Miners: When miners return from an ice comet, the market is flooded with high-quality water, causing prices to drop. This is the perfect time to buy low and refine for later.

You can find more detailed discussions on these economic shifts on the Probably Stolen Steam Community page, where players share real-time data on price fluctuations.

The Pursuit of 100% Pure Water

For the ultimate challenge, some players attempt to produce water with zero contaminants. This requires a specialized setup where the faucet is never upgraded beyond the "Gutterflow" stage, forcing the player to rely entirely on mechanical refinement.

To achieve 100% purity, you need a total of 200% quality bonus applied to your purifier. This is usually achieved by using a combination of AI Modules and Advanced Turbo Boosters. According to community experience, once you hit the 99% threshold, the Hydrotech Purifier becomes extremely slow. At this stage, the Advanced Water Filter in a pitcher is often the only way to bridge the final gap to 100% without spending weeks on a single batch.

Common Mistakes to Avoid

Even experienced shopkeepers can fail at the water trade if they aren't careful. Here are the most common pitfalls:

  • Ignoring Durability: Filters and purifiers break. If you run a purifier to 0 durability, it may destroy the water inside or require expensive electronic parts to repair.
  • Mixing Batches: Never pour lower-quality water into a container of higher-quality water. The entire container will immediately revert to the lower grade.
  • Forgetting the UV Lamp: Many players waste purifier durability on microbes that could have been removed for free with a UV lamp.
  • Poor Labeling: If you forget to update the label after refining, a customer might offer you a "Base Water" price for "High Quality" water, costing you hundreds of credits in lost profit.

Summary of the Pure Water Process

To recap the most efficient way to handle probably stolen how to make pure water, follow these steps every night:

  1. Collect raw water from your faucet or moisture farm.
  2. Scan the water with an AquaScanner to identify the contaminants.
  3. Use a UV Lamp to clear all microbes.
  4. Apply Purification Tablets if chemical waste is above 10%.
  5. Run the water through a Hydrotech Micro Purifier until it reaches 95% purity.
  6. Finish the process by pouring the water through a pitcher with an Advanced Water Filter to reach High Quality or Pure status.
  7. Label the container correctly and wait for a "Water Supply Crisis" to sell.

FAQ: Probably Stolen Water Trading

How do I get the Water Trading Manual?

The manual is sold by Dr. Jackson New in the public Playtest. You must purchase this manual before you can use water-related machinery or unlock specific water perks in the Wild Network.

Why is my water not becoming Pure even after multiple filter cycles?

Purification in Probably Stolen has diminishing returns. The cleaner the water is, the harder it is for basic filters to remove the remaining trace contaminants. To reach "Pure" status, you generally need Quality Modules installed in a purifier machine or an Advanced Water Filter.

Can I sell empty water containers?

Yes. Water containers like jugs and bottles are classified as Household Goods when empty. During certain market events, the price of the container itself may rise, allowing you to profit even without the liquid.

What is the best way to make money with water early on?

Focus on reaching Base Water (85%+ purity). Most early-game customers will buy Base Water without much haggling. Chasing High Quality or Pure water is too time-consuming until you have a Powerline Hijack and a Moisture Farm to offset the costs.

How do I use the UV Lamp?

The UV lamp is a tool, not a machine. You simply select it from your inventory and use it on a liquid container. It will instantly remove 100% of microbes. Community reports suggest using this before any other filtration to save on filter durability.

Sources and known gaps

  • Probably Stolen Water Trading Guide — Water Merchant Basics Source accessed:
  • Probably Stolen Source accessed:
  • Everything You need to know about Water Trading! - Probably Stolen playtest Water Farming Tutorial Source accessed:
  • In pursuit of pure water - Probably Stolen playtest challenge playtrough - Episode 1 Source accessed:

    Related Guides

    water filtration cotton fabric

    Discover if probably stolen water filtration cotton fabric works for DIY filters. Learn the best materials, safety tips, and step-by-step experiment guides.

    radioactive waste

    Struggling with radioactive waste in the game? Discover proven player strategies to safely dispose of probably stolen radioactive waste and keep your run going.

    acidic solution

    Discover where to find the probably stolen acidic solution in-game. Learn crafting recipes, trading tips, and how to use this corrosive item effectively today.

    how to fill a bottle with water

    Master water management in Probably Stolen. Discover how to fill a bottle with water, manage your supply chain, and maximize profits in this simulation.