Bro jigeloh: I Had the same watery problem before on my civic fd2. It turned out the that butyl tape aka "katol sealant" of the plastic covering of the inner door had already lost its adhesiveness thus allowing water to seep in the car's cabin.
If this is the case, the best remedy is to buy a "katol sealant" from your suking car supply shop. the 1st thing to do is to carefully remove your car's door panel. the next step is to clean & remove the old butyl putty from the plastic sheath & then re-apply the new butyl paste to it again. once done, plaster the elastic sheet back to the door shell in order to make your car's interior water proof anew.
Medyo matrabaho siya if you diy it pero am sure hindi na water compromised ang integrity ng car doors mo.
Here are some pics of my diy fix-it:
Before:
after:
the katol sealant aka butyl tape:
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