because your heater core has a leak or the hose is broken
Are you running the air conditioner? If the drain line is plugged, it will leak water (condensation) onto the passenger side floor.
heater core may be leaking or hole in floor
Is it blood, oil, water, or urine?
There is a drain on the outside firewall that is clogged.
you could have a heater core leaking or your windshield is leaking and the water is running down behind the dash and onto the floor.
bad heating core
Probably have a leak in the heater core>
Heater. Core
yes you can but remember it is not designed for excessive or standing water contact.
Water on the passenger side floor would be a plugged up AC drain. The drain is located under the hood, at the lowest point on the HVAC box on the firewall. However if the floor is wet with engine coolant, the heater core is leaking.
because the water reduces friction between the surface you are standing on, and your feet.
Condensation from air conditioning?