Toilet

The toilet need is one that is present in each crewmember from the first level on. It is represented on the crewmember's needs view by the waste icon. It can be satsfied by having a functioning toilet on the spaceship. It seems to increase more quickly when a crewmember is sick.

The "Flushmatic" upgrade makes toilet facilities more efficient at reducing this need (the horizontal bar recedes leftward more quickly).