Citroen Picasso C3 , 2010, 32K. I'm concerned about water accumulating on the rubber mat on the driver's side. I though at one stage it was melted snow carried in on my feet but I am convinced that it is related to the use of windscreen washers. I recently went through a car wash with no leaks but having replenished the windscreen washer fluid and having used the washers the water in the floor well has increased. Help! FTB