Watch one Water path
Follow one visible route from source to basin to Sand contact before adding pumps or rebuilding the factory.
Water troubleshooting
Sandustry Water Disappearing? Shortage, Leaks and Fixes
Quick answer: Water usually looks like it disappeared because it wandered across flat terrain, leaked through a diagonal corner, converted into Steam near Fire, or never touched Sand before leaving the mixing zone. Build a small basin, seal corners, shorten the route, then confirm Wet Sand forms before scaling the factory.
Water Disappearing: Symptom, Cause, Fix
| Symptom | Likely cause | Fix |
|---|---|---|
| Water disappears on flat ground | A loose droplet is skittering without finding a depression, then evaporating after the official timeout. | Dig or build a small basin first, then route Water from that stable pool. |
| Reservoir keeps losing Water | A diagonal block corner is open, so liquid can slip through the meeting point. | Seal every diagonal corner around the basin before adding more supply. |
| Wet Sand never forms | Water exists, but it is not touching Sand in the mixing area. | Move the Sand contact point next to the outlet and verify Sand turns into Wet Sand before it reaches machines. |
| Water vanishes near heat | Fire is converting Water into Steam, which behaves like a different route. | Separate hot paths from the Water line, or plan the Steam route deliberately. |
| Water reaches the wrong place | The path is too long or too open to inspect from source to mixer. | Shorten the route and compare it with the Early Water Setup. |
Check Order
Contain first
Confirm Water settles in a basin or depression instead of skittering across flat terrain.
Seal diagonal corners
Liquids cannot flow through solid blocks, but they can slip through two-block corner meetings if the gap is not closed.
Make Sand contact visible
Put Sand directly beside the Water outlet so you can see the moment Wet Sand forms.
Separate Steam from leaks
If Fire is involved, treat Steam as a new routing problem rather than a normal shortage.
Scale only after one chain works
Once one basin-to-Sand path is reliable, expand the same shape instead of debugging a full factory at once.
Preventive Layout
Use a small contained basin, a short route to Sand, and one visible Wet Sand exit. If the line stops later, shrink the test back to that readable chain before changing supply volume.
What the sources establish
This is a source-checked diagnostic page, not an in-game tested blueprint. The Water behavior comes from the official Water and Wet Sand references; the layout advice is a practical troubleshooting order built from those mechanics.
What it does not cover
This guide does not claim the best Water network for every map, the exact amount of supply a line should have, or that every missing droplet is a source problem rather than a route problem.
Featured Questions
Why does my factory keep running out of Water?
The most common reasons are leaking corners, long wandering routes, bad contact with Sand, or Water turning into Steam before it reaches the useful area.
Should I add more Water first?
Usually no. First prove where the current Water is going, because a routing problem can look exactly like a supply shortage.
What page should I open after this one?
If the route itself is unclear, open Water mechanics. If the shortage is breaking the full line, compare it with Factory Not Working and the early Water setup blueprint.
Primary Sources
Source note: This recommendation is source-based, not an independently benchmarked build.
Official source