Bad Plumbing is an expired level from Levels of the Week .
How to beat
This level is like a maze. Put the water on the first pipe and let it go on the left pipe to fill more poison. Put it on the left and collect a Cranky Duck. Don't put the water on the left pipe or you'll lose the poison. Pour them on the right and put it to the clean water. Put them down on the second pipe and collect another Duck. Pour the water on the right to go to another room near a Duck. Collect it and remove the algae from Cranky's food.