I have clean clear water coming from under the passenger side dash. on 1990 Plymouth Acclaim

The water is clean and comes only from under the dash on the pass. side. The car does not overheat and runs perfect. When it rains, I see no water coming in from the door. I looked at the shelf in front of the windshield and found that tere is six screws there to hold the black plastic thing in place and found that no longer do they hold anything. They have nothing to go into anymore. The water is clean anf clear.

Asked by for the 1990 Plymouth Acclaim
Air conditioner drain is stopped up. Prob. find a video on youtube how to clean it out.
You guys are great!! Thank you much for all the help.
Glad to help.