2009 Ford Mustand - Water leaking from underneath the passenger side dashboard?

It was pouring down rain the last few days and I noticed what appears to be clear water (perhaps rain water) leaking from underneath the passenger side dash board. I used a few towels to mop up the water on the floor. Is there a fix that I, a non mechanic (me) can fix this. I just had to spend $500 on a brake job.

Thanks

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