: Now living together, Derek pushes for Meredith's roommates, Izzie and Alex, to move out. Meredith initially resists, feeling that they are her family.
In Seattle Grace Hospital faces both a literal and figurative collapse as a massive plumbing leak turns into a hospital-wide deluge. While Chief Webber struggles to maintain the hospital's reputation following a drop in national rankings, his personal and professional lives are tested by the chaos. Hospital Crisis: The Flood [S5E3] Here Comes The Flood
: Neglected maintenance leads to a pipe burst that floods the surgical floors. : Now living together, Derek pushes for Meredith's