Was replacing my power setup and there were some non-polluting water spills left in the area. I can't seem to build rails over them and I waited for an hour and they don't seem to evaporate away. How to remove spills?

They should eventually evaporate. An hour seems long. Are you using modded tanks with larger capacities?

Yeah, I'm playing with SE and K2 (K2 has big storage tanks)

Okay, tested this a bit more. Even small pipe segment water spills don't evaporate. Even after 4-5 in-game hours. Does this have to do with water spills producing 0 pollution so they take infinite time to evaporate or something of similar effect?

No, they should still evaporate. Could you send me a save to test with? Or just your mod list?

Here's a 100x100 version with all my current mods for you to test. If you'd like I can send over the actual file too.

https://www.dropbox.com/s/hppwxl8hl93fls5/Water_evaporation_test.zip?dl=0

eg, In my actual save, this puddle of water has been sitting there unevaporated for over 20 hrs at least
https://imgur.com/a/fDFMYs4

Hi there! Were you able to reproduce the issue? Would you like more inputs on this?

Same issue here, spills never disappear.

We are considering removing this mod because we can't build belts over these spills.

I also have this issue while in a new game, I think some of the water spills disappeared, but I'm not 100% sure. I broke a few vanilla water pipes and it has been there for more than an hour. I also changed the map setting "Pollution Evaporation" to 1 and it's still there so I decided to disable water spills.

Root cause was an arithmetic/logic bug triggered by all existing spills evaporating, then later new spills being created. This is fixed in the latest version. Sorry for the delay.