Assuming this is a front door leak? The problem is probably a worn rubber seal where the glass meets the window (where window comes out of the door). For temporary fix, I sealed the area with electrical tape (window up) and it works fine. You have to also tape over the switches for that window too or you will constantly be replacing the tape or maybe even a window regulator........very very expensive. I took my car to the dealer originally and they said it would take a long time to find a window leak. I'll bet they already knew what it was. When I got home and really looked at it it was a no brainer. Of course, the final solution is to replace the original rubber seal.
Probably leaking heater core.If not repairable get one from junkyard.
You probably have a leaking heater core.
Freon could be leaking anywhere in the ac system. A colored dye can be added to the system, then seen with a special light to find the leak.
Ground water can get into most older septic tanks through gaps in the concrete.
Typically, if your car is leaking water it has to do with the air conditioning system. This simply usually means the condensation is leaking from the AC.
Remove toxic
That could be a leaking exhaust system. A leaking exhaust system is very dangerous! Please have it checked out ASAP.
Hose leaking Water pump leaking
i have no clue what you are talking about
Sounds just like a leaking heater core. See "Related Questions" below for more
Can be leaking from a hose not secured properly or a hole in the system.
This is coolant. You have a leak in your cooling system or you water pump has failed and is leaking.