Volvo Repair: Theres a water at rear seat, automatic car wash, volvo 850

Question
Hello Mark,
I'm from Indonesia and i own a Volvo 850 '97, far away just for asking you a question,i have problem with this,there is a water at rear seat, is there any leaking problem on AC, because lately i just changing my evap..I'm not sure it comes from the AC because i just cant find any water dropping from the hose and i don't see any hose under the carpet..and for my second thought, is there any possibility the water comes from the automatic car wash..because the staff said to me that there is a puddle under carpet at rear seat..it's funny for me, because it's only happen at the rear seat..
by the way sorry mark for writing a long question, because i just wanna tell you the whole story..sorry if there any misspelling or bad written English..

thanks mark

Answer
  Derry, your english is fine! Make sure that the evap hose is located properly and has not pulled off of the evap. case and not plugged. Then check the sunroof drains to be sure they are not plugged. Lastly, check that right and left rear door's window weather stripping. They slide down on the sides in the channel, causing a leak. HTH

Mark