Puzzle:Pine Fell Water Plant

After entering Pine Fell Water Plant, exit the stairs and turn right. Pass the two big pipes and the first door on the right and go to the second door. there you will find on the floor the Keycard.

After entering in the building, go to the computer room (second floor). On one of the desks there is a key.

Go to the computer on the left and will see this:

Open the light-blue pipe on the left from pools:

Go to the first floor and find pool 1. It is empty:

Press the red button bellow the green light to fill it up:

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