Water runs to the back of the car as parked on a sloap, rear lights or leak on windscreen seal have been suggested. door seals seam ok. Anyone know of any common places for leaks? Thanks

is the water green, then your heater has trouble, if not, you could have a firewall/floor bung missing or moved, or it could be a windscreen/door leak. do you leave your windows down? (reticulation etc.)

have all your seals checked , all rubber seals will leak eventually if they are not lubricated properly

I'd check the blinker fluid if l were you. Often times, that will leak and have to be topped off.