Quick Answer
Water is a core Sandustry production material: it wets Sand and Spores, and large factories need a dependable supply. The official wiki lists underground deposits, melting Ice, and rain created when Steam reaches the sky as sources. Once Pipes research is available, a Pump connected through Pipes to a Liquid Vent can relocate Water to a controlled basin.
The important design lesson is to treat Water as terrain-like matter rather than as a number in a tank. It flows, pools, can escape through corners, and reacts with other pixels. Build a contained route first, then expose it to Sand or Spores only where you want the reaction.
What Water Does in the Production Chain
The official Water and Sand pages describe the first major use clearly: contact between Sand and Water creates Wet Sand. Wet Sand can then be processed by Shakers for Gold and Slag, so unstable water delivery interrupts the factory near the start of its chain. Water also turns Spores into Wet Spores, which connects the liquid network to later plant production.
Heat and cold give Water a second role. Fire changes Water into Steam, while Ice can be melted into Water; the Steam page says Steam rises and becomes rain when it reaches the sky. The Steam store description independently highlights the same ice-to-water-to-steam-to-rain cycle, making it one of the best-supported physical systems in the game.
| Situation | Officially documented result | Planning implication |
|---|---|---|
| Water touches Sand | Wet Sand is created | Keep the mixing zone separate from storage |
| Water touches a Spore | A Wet Spore is created | Prevent plant input from contaminating sand lines |
| Water is heated | Steam is produced | Leave a clear vertical route if rain is the goal |
| Steam reaches the sky | It returns as rain | Shape the roof and collection basin deliberately |
| Pump touches Water and connects to a vent | Water moves through Pipes | Keep solids away from the Pump intake |
How to Obtain and Move Water
Start with the nearest reliable source that does not require a complicated conversion. The official wiki lists underground deposits and melting Ice, while Steam returned as rain becomes useful when you can safely control heat and vertical space. It also mentions duplication behavior, but does not describe a fully automatic method, so do not build a critical line around an assumed infinite exploit.
For mechanical transport, place a Pump so its intake actually touches Water, connect Pipes, and end the network at a Liquid Vent. The Pump page warns that solid pixels can enter the same space and stop Water from occupying it, which prevents transport. A clean intake chamber and an accessible inspection point are therefore more valuable than a visually compact buried pump.
Use this cautious setup order:
- Excavate or build a basin with complete walls and no diagonal corner leak.
- Confirm the source settles inside the basin before adding processing material.
- Place the Pump at the water edge and keep falling solids away from it.
- Connect Pipes to a Liquid Vent over the destination basin.
- Test with a small amount before opening the full reservoir.
- Add an overflow or shutoff area that can be isolated without rebuilding the factory.
Containment, Leaks, and Troubleshooting
Water settles into depressions and tries to form a flat surface, so a shallow open channel behaves differently from a sealed pipe network. The official Water page notes that liquid can slip through the meeting point of two block corners when nothing closes that gap. If a reservoir drains unexpectedly, inspect diagonals and seams before assuming the source has vanished.
Conveyor Belts, Blocks, Kinetic Slag Presses, and Flux Emanators are listed as blocking Water flow, while ordinary Filters are specifically called out as permeable to it. That distinction matters when a line looks enclosed but still leaks through a sorting element. Advanced or version-specific filter behavior beyond the official description is Pending confirmation, so verify the current in-game tooltip before relying on it.
If a Pump stops, check for solid material in the intake before replacing Pipes. If Steam pools under a ceiling, create a safe upward path or allow it to condense locally rather than sending more heat into the chamber. If Sand consumes a reservoir too quickly, narrow the contact surface and feed Water into a defined mixer instead of flooding the entire sand pile.
A Maintainable Water Layout
A dependable layout separates source, transport, storage, mixing, and recovery. This makes each failure visible: a dry source is different from a blocked Pump, a broken Pipe route, or an over-consuming mixer. It also prevents one production change from draining every system that shares the same water supply.
Keep the main basin lower than nearby sensitive production so accidental overflow has somewhere safe to settle. Route Steam through a dedicated shaft if you intend to recover it as rain, and collect that rain away from exposed Sand. Exact throughput, reservoir size, and evaporation timing may change during Early Access, so those numeric design targets are Pending confirmation and should be measured in the current build.
Reading the System Before Rebuilding It
Observe the state of the material at several points before changing the layout. Water present at the source but absent from the destination suggests an intake, Pipe, or vent problem; Water reaching storage but not the mixer points to containment or routing instead. Steam appearing where liquid should remain identifies unwanted heat, while Wet Sand outside the mixer shows that Water is contacting Sand too early.
This evidence-first diagnosis keeps the response proportional to the fault. Clear a Pump intake before adding a second Pump, close a corner gap before enlarging the reservoir, and redirect Steam before supplying more Water. Because the official pages describe physical interactions rather than guaranteed production rates, visual checkpoints are more reliable than a copied throughput target during Early Access.
Sources
Sandustry is developed by Lantto Games and published by Hooded Horse. This independent guide is not affiliated with or endorsed by the developer, publisher, Valve, or Microsoft.