Ac water leaking in passenger to fix on 1997 Volkswagen Jetta TDI

Water is leaking heavily on the passenger floor during and after using AC...what is the best way to fix this...

Asked by for the 1997 Volkswagen Jetta TDI
The drain tube for the AC/ heater box is clogged (leaves dirt trash) try to find the drain under the car and stick a long piece of wire in it to unclog it or blow air into it sometimes works. The water is hot moist air condensing on the evaporator core and this drains out the tube onto the ground usually.
Is it still safe to drive if this is happening