All 8 Fountain Locations:
1. Firehouse: In the Beginning of the game, after you slide down the pole but before the stairs you go down.
2. Sedgewick Hotel: When you begin the first Sedgewick Hotel level, after they get done talking go to the right and in that hallway.
3. Sedgewick Hotel: After the flooded hallways and before the Sargassi's Restaurant.
4. Times Square: In the back of laundromat before you leave.
5. Times Square: After being chased by Stay Puff and past the elevator cutsense, down the hallway and on your left.
6. Library: Right before the Children Section.
7. Museum: Past the hidden door in the Egypt exhibit, down the dark hallway next the the giant Egyptian head.
8. Return To the Sedgewick : Right when you kick the door to the Generator Room, right in front of you.

New video doesn't want to work on Steam, here the old version, poor quality still works.

https://www.youtube.com/playlist?list=PL-bVf1usqnbAg4H_EWzDWy9OHkfbJa4Ua