Water in fuel tank

[rof18]

I Have a transit trend 08 plate which has just returned from the dealership workshop where i was told that the red light which kept coming on with water in the fuel was caused by driving through water. One of the mechanics let slip that ther was a problem with the breather pipe for the tank and this caused the water to get into the tank when driving in wet conditions. Ford don't accept that there is a problem with this, so i'm wondering if any other person has had this trouble with their transits especially the newer models

[ake]

Any diesel tank will end up with water in it from condensation on the inside of the tank, thats why the filter acts as a water trap

[rof18]

I accept that there is condensation inside the tank and that the filter acts as a trap.
The problem is i'm having to empty the trap every 3-4 weeks which i would say isn't condensation' I'm told by the dealership it was caused by going through water as I live in scotland the majority of time is driving in wet contitions so surely I shouldn't need to drain the water every 3-4 weeks there must be some problem somewhere to let so much water in. I have other diesel motors which have had no problems so it isn't where we get the fuel from as we get it at the same place all the time.