Yes it has been moved! So sorry I haven't updated the walkthrough yet.
If you're lost check around the sewer area for one of the backrooms, that's where the new water connection is.
Apologies for any inconveniences.
And for finding the second friend you'll have to kill the big wiggly man in the smoke world to find the maws and from there you'll be able to continue on to find some of the other new worlds and find the other friend.
Thank you for the help! I did end up finding it on my own. I ran past that area several times and didn't figure to jump in it so maybe make the tiles a bit more distinct so you can tell that you should probably examine this. Loved the game and can't wait for next years update! Hopefully some of my burning questions will be answered! Looking forward to it!