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I recently bought a house and for the first month+, there was absolutely no water in the basement. All of a sudden one day, I go downstairs and there are puddles! I look and see that the water is coming from the seam between the floor and the foundation wall, but also through the floor in some places.

The funny thing is, I have a sump pump and the pit has THREE corrugated pipes going into it. They are all spilling out water constantly and this water is being pumped out. It seems like (if I reach my hand in through the pipes) they go along the walls. This leads me to believe I have a french drain system installed in the basement.

The question is, even though there is water coming out of these pipes, why am I still getting a flooding basement? And why in the world would it occur so suddenly like this?

Maybe the pipes clogged up? Any help or thoughts would be greatly appreciated!

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    Heavier Rainfall or an already saturated ground. Where is the sump pump and the pipes - obviously pictures of your leaking seams, floor and the sump pump setup might be more helpful. The foundation / wall leaking requires sealing - since you just bought the home if you are in the USA check your laws regarding disclosure of material facts. You might have recourse to get the previous owner to resolve it. Most states though are Caveat Emptor when it comes to real estate. – Ken Feb 25 '18 at 9:22
  • in the midwest, we just got 5.5" inches of rain in 2 days; there's simply not enough room in the system for that, especially on still-cold soil. dirt between the sump corrugations and seeping cracks is over-saturated. – dandavis Feb 25 '18 at 18:53
  • Since there is a sump pump my experiance is there will be times the system cannot keep up. As @yehuda_NYC stated possibly the discharge points are becoming plugged, trying to seal from the inside almost never works for the same reason once the pressure builds the water finds its way in. However I have had some good luck sealing with epoxy in the summer that has really made a difference in 2 of the below grade homes I have owned and several others that I have done. – Ed Beal Jun 1 '18 at 16:02
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The french drain has to empty someplace. Perhaps that path has gotten plugged up.

  • Or its water level is higher than the basement floor and water is doing what water does. – Harper Feb 26 '18 at 17:48

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