leak inside the car on 2009 Cadillac DTS

there is a leak in side the car and the water gos to the back floor and it,s very wet the leak seems to being in the front seat .no ones seem,s to know please say did i dropp a bottle of water please help me

Asked by for the 2009 Cadillac DTS
If the water is coolant you probably have a bad heater core.
I also have the same problem with my 2010 dts, but only when it rains...i'm thinking a seal is not working around doors or windows, but i can't find the problem....water only in back seat area.