water is coming in on the pass.side under the dash.not sure if ac on or raining.

I AM TAKING THE CAR IN FOR SERVICE ON THE 11TH.I WILL TELL THE TECH ABOUT THE POSSIABLE DRAINAGE BLOCKAGE.WE JUST HAD A VERY HARD RAIN FOR 2HRS.& NO WATER IN THE CAR,SO THE AC IS LOOKING VERY GOOD.THANK YOU JERRY