coolant leaking inside floor of driverside. on 2002 Buick Century

coolant level keeps getting low, keep putting coolant but I notice coolant on inside floor on driver's side.

Asked by for the 2002 Buick Century
check for leak at heater hose connections, near the firewall. Also check to see if the coolent is coming from the heater case. If so you probably have a leak in the heater core.
You can also turn on the defroster if you get a sweet smelling mist on the windshield, then
it is most likely you have a heater core leak and you would need to replace it.
1 more answer
you can bypass the heater core , til u can fix it and u wont have leak, hard to defrost windows though