How to Convert
Currently, there are 2 ways to convert puddle water into clean water.
If you’re outside when raining, you can simply press TAB to open the inventory and drag the water into your Filter Drinking Bottle which you can craft under the Craft section.
You can also cook the puddle water.
First, you must build a Camp Fire, then a Cooking Hob on top of the camp fire under Build > Production.