WaterCanBeClean
When creating a potion with an empty bottle in a body of water it can result in clean water.
When used in wells they need to have water in them. Doesn’t work on holy wells.
You can configure the frequency, by default it’s 1 in 50.
Settings can be adjusted in the config file that appears on ElinBepInExconfig after the first launch of the game with the mod enabled or by using https://steamcommunity.com/sharedfiles/filedetails/?id=3379819704 (allows changing the settings without restarting the game).