Water leaking in. getting in floor board on driver side and some on passenger side.

SOURCE: Water on Drivers side Saturn SC2

Is it antifreeeze from heater core or heater core hose leak?  Is the leak pure water, or maybe something else?
Put it in the garage again overnight with an old white towel in the drivers foot well, best if you can find a way to stretch it from drivers seat forwar to firewall and keep it off of floor mat.  Check it before you go to bed,  then in the morning if no leak found yet.  see if the color/location of the spot helps you identify the source.  I think the heater core is under the dash center.  Anti freeze is green/yellow or orange.
good luck

SOURCE: water leaks on floor board of passenger and driver

i would check ur heater core sometimes they wil leak onto passenger side floor. and the coolant smells bad and will cause moisture through out the vehicle because it is hot.

SOURCE: leaking moonroof onto passenger floor

I would lean more towards one of the drain tubes being disconnected. You will have to get into the headliner to check. Your leak is in the front, I would remove the sun visors and the trim on the windsheild pillars, this should allow enough room to see it the drain tube is loose. The drain tubes usually push onto a nipple at the front of the track, if it's loose just push it back on and secure with a zip tie.

SOURCE: water leaking into passenger side floor

where your battery sits look inside there maybe some twigs and leaves blooking the drainage holes look all along there i had similar problem on vw passat no arm in looking hope this helps?good luck

SOURCE: 2002 Mitsubishi Galant I am getting water

It sounds as if the drain line from the vent is plugged. You'll need to get under the car (jack stands please ) to locate. In your forward vent where air comes in for your AC or just Vent rain will obviously get in to it. There is a drain hole at the bottom of this to allow water to flow out. With time from dead bugs, leaves, road dirt... this vent can plug. Under the car locate this vent line, place a small wire up within it to remove the blockage. After doing you may want to both test and flush by use of a garden hose. If there is a lot of accumulated debris it might plug back right away and you'll have to clear again.
I hope this may have helped,
Tom