Puzzle:Sewer Flushing Line

Sewer Flushing Line

General
Map	stormdrain
Type(s)	Water Pipes
Connections	None
Video	None

Mark leaves the bunker through the vent, and arrives to the sewer. but...

Problem

The flushing line endlessly floods the room with sewage. The door leading out of here is locked.

There are 2 solutions

Solution 1

Go down and close the flushing pipe (center). This will let the sewage to mix with the drinking water and counts as a mistake target.

Solution 2

Open the water district pipe.

Then grab the handwheel from the sewer district pipe (falls out when tried to rotate),

Put it in the other flushing tube (sewer) pipe,

Close it!

Close the water flushing line (other one)

And now you can leave!