Purple Water is a contaminated fluid. It is the third fluid introduced to the player, and first appearing in the Sewer.
Purple Water has a normal consistency in terms of movement. It behaves the same as both Water. Purple Water is needed to complete Cranky levels and to collect Cranky Ducks. Purple Water will kill any other Ducks. If any amount of it enters Swampy's or Allie's pipe, the level is failed.