Nissan Sentra 2016

There is water on the floor board on the passenger
side of the car. At first I thought it was the ac but it
wasnt as it still leaks the water on the outside. So I
thought it would be something that needed to be
sealed from under the dashboard, I thought maybe
rain water was getting in. So I held a hose over the
front of the car and the water wasnt coming thru
from under the dash board. Can someone please
tell me why else there would be water on my floor