A water leak on the passenger floor can be caused by a clogged AC evaporator drain.Google+
Car Problem Reports
Honda Accord Water Leak Due to Plugged AC Drain
Honda Accord Problem
Average Mileage: 130,600 mi (49,000 mi - 190,456 mi)
Visitor, 2007 Honda Accord, 49,000 mi
Water is in the rear passenger seat floor -
Visitor, 1996 Honda Accord, 98,000 mi
Saw water on the floor mat on the passenger side. Took it to shop and was unplugged in seconds. Haven't had a problem since. Now at 138000 miles
Visitor, 2007 Honda Accord
Plugged evaporator system clogged.
Visitor, 1995 Honda Accord, 176,000 mi
Took apart and cleaned drain and stinky mold stuff out of drain.
Visitor, 1997 Honda Accord, 121,144 mi
Every time I turned right in the summer -- whether or not the air conditioning was on -- water would pour over my right foot. Hard on the Stuart Weitzmans. I didn't fix it as the car is 13 years old.
right turn cause warm water to spill on my right foot, sometimes it was hot and I have bare feet in summer. tried to find the exit tube to clean it out with wire hanger, could not find it, had to take it to shop, they did it no problem since