My experience with Ford Focus, VW Golf, VW Polo the issue is simple :-) blocked waiste pipe which're actually hidden the result will cause fill up your water collector at the base of the windscreen and water will infiltrate through your pollen filter straight to the front passenger area. You can actually see the water dripping under your glove compartment if it's raining heavily...
heater core is leaking.
If that water is engine coolant, the heater core is leaking.
bad door seals
This would be caused by a leaking heater core, or a leak in the plumbing associated with it.
water in passenger floorboard, where is the hose that would cause this?
Have you used your air conditioning lately? The most common reason for water to appear to be leaking on the passenger floorboard is that the condensation drain for the air conditioning is plugged. Unfortunately, the drain is pretty much inaccessible to the average person and I have yet to discover a reasonable method of clearing it other than paying the dealer or a mechanic to do it. The other, less common causes for that type of leak is that the heater core is leaking, in which case the fluid will be antifreeze rather than water, or the door seal on the passenger door may be leaking, or the windshield gasket may be leaking.
The condensor drain tube is clogged. Find the drain line and unclogg it.
your ac might be clogged or your draining hose is clogged. its in that area
because your ovberflow or condenture tube is clogged remove it and just blow it out with air
A damaged heater core will cause coolant or water to leak onto the passenger floorboard.
Passenger's side? Could be a leaking heater core
Would that be when it is raining ? If so you need to caulk around the vent in the fire wall area. If not from rain, then the heater core is leaking, and you will be losing coolant.
Heater core leaking? Windshield seal leaking? Door seal leaking? Evaporator drain plugged?
The most likely culprit is the heater core.. its usually located under the dash on the passenger side.. if it starts leaking you will have water on the passenger side floorboard.. also the radiator fluid will be low.. Another possibility is the drain from the ac is clogged... alowing condenced water from the ac process to dump in the passenger side floorboard.. the heater core and the ac drain are located in the same area...
Check AC drain and clear the blockage. Also look for firewall sealer skips.
normally you have no heat and,or water on the passenger floorboard
the heater core is leaking it is located in the duct work under the dash
It wasn't an impala, but I had a car that leaked and would fill the floorboard on the passenger side. It was due to a drain that was plugged with dirt, leaves, etc. that ran down from the windshield and would normally drain out under the car.
I BELIEVE THE WATER COULD BE COMING FROM YOUR AIR CONDITIONING .
It could possibly be the heater core Check your heatting and a/c
You will know if you have a leaky water pump because it will be leaking coolant out of the water pump.
have your heater core checked its probually leaking
Heating hoses are exposed and need to be replaced. The heater core is leaking coolant.
You could have a seal leaking around a door or if you have a sunroof the drain holes might be plugged. Most cases of water leaking into the floorboard would be a plugged ac drain in the evaporater case. If you notice on a hot summer day and your ac is on that if you leave it parked, you will see water on the ground. This is from water draining out of the case, but if the drain becomes plugged it will build up in the case and slosh around and sometimes come into the floorboard.
plugged evaporator drain tube or the heater core has gone bad