Water in rear footwell

[Mick robbo]

I haves 2017 Vauxhall insignia 

the rear footwell behind the driver’s seat is wet through check all seals which seam ok rest it the car is dry just the footwell behind the drivers seat looking for any suggestions 

thanks

[feefee]

i'm havng this in 2012 insignia, I cannot figure it out. Please let me know if you found a fix!