The water pump on a 2000 Chrysler Cirrus is located at the
front of the engine, near the timing belt. To be more precise, it's driven by the timing belt itself. You'll need to access it from the front of the vehicle, likely requiring removing some components like the serpentine belt and possibly some ancillary components depending on the exact repair needed.
Because of its location and the work involved in accessing it, replacing a water pump is generally considered an intermediate to advanced automotive repair task.