Why is water soaking the footwells on one side of my Volkswagen Golf?

Yesterday I discovered water ingress in the front and back near side footwells of my Volkswagen Golf. Recently we have been having problems with condensation in the car, but presumed it was just because of the time of the year. I was cleaning the car yesterday and took all the mats out. The carpet was sodden in the front and back near side, so I dried it out as much as possible with hair drier and left some newspaper in the footwell. We went out for the day and the paper got soaked. Whilst cleaning the boot I removed the carpet. The spare wheel storage compartment had two inches of clear water. Do you have any ideas as to the cause or how to fix it? It's strange that it was nearside only, the offside was bone dry.

Asked on 23 January 2018 by Rob Scholey

Answered by Honest John
Reads as if the one-way cabin vent flaps have failed. These are situated between the lower sides of the load area and the rear bumper valence extensions, usually hidden by carpet. Alternatively, the front bulkhead vent well may be flooded because the drains from that are blocked so rainwater has seeped through the pollen filter into the car.
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