We have a 19954 toyota corolla and need to find

got a sunroof in this? If so, clean the drain tubes.

Sounds like the door gasket or trunk gasket is not sealing.
You may have to take it to a body shop to find the problem.

Check the door rubber seal for flat spots or maybe something stuck to it causing water to get past it.

do you have a sunroof those drains maybe clogged

I would say you have either a bad seal on the windshield or the seal on the passenger door opening.

your windshield is probably leaking. have someone spray that area of the windshield while your inside the car and look for water..a glass shop may have to reseal your windshield.

first park your car where the back is flat then spray with a water hose on the back widow only and if you still have water go to a glass shop and let them seal your glass properly water is going in the car because there is a leak in the is or when you drive in the rain the water is coming up in the wheel well

It could be water condensing from the A/C and dripping onto the passenger rug. Check under the passenger side dashboard, above the footwell, for the drain pipe from the A/C. If it's loose the water may leak into the footwell when the A/C is running. Should be reasonably easy to fix.

1984 Corolla - i hate to say it but if you get the screen removed you will probably find A LOT of rust on the aperture - only solution is a bodyshop to repair and not cheap either!

You may have a buildup of A/C condensate water in the A/C cooler box. Start the car up, and run the A/C; you should start to see water dripping out from under the car onto the street. If not, the A/C condensate tube may be blocked or dislodged from the A/C box. The water then leaks out of the box onto your floor. The drain is on the pass side, under the dash, close to the center console. The pipe goes thru the body. This is a very common issue.