I was about to suggest that a way to automate water purification should be implemented- but lo and behold, despite it not working with normal cauldrons, you can use a bucket of water in a dispenser to fill campfire cauldrons. 100% automated water system, just need lots of buckets.

Point is, I really think it should be documented somewhere that this functionality exists, because I think it's really significant that it can be automated by in a totally vanilla way.

Yea it should be documented somewhere, I'm just too lazy xD

There is now some documentation with a handbook added by patchouli.
It doesn't add the info for how to automate purification but general info which is imo enough.