the water sive does not work

Changed Status to Known Issue

Thanks for the save, looking into this.

Changed Status to Fixed

Thanks! This finally gave us the clue we needed to fix a longstanding but where missing materials weren't being shown on buildings.

In your case, the problem is that your colony is out of sand, so the water sieve can't work, but it wasn't showing that it was missing sand.

This will be fixed in the next patch. In the meantime, you can keep the colony going by digging out more sand!

Any chance that you look over at the other longstanding Water Sieve bug with its output temperature?