swishing sound, sounds like ocean. water coming in from under dash , wets carpet on 2007 Ford Edge

mostly on passengers side, air conditioner splutters.

Asked by for the 2007 Ford Edge
evap core drain is plugged and running over or heater core is leaking,does water taste sweeet if so its heater core
is that hard to get to to fix? thanks so much!!
depends on which one it is