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Question DetailsAsked on 2/28/2014

Looking for help with water issue underneath the house. Travels under slab to crawl space.

French drain in the backyard where the water is coming from. Downspouts connected to carry water away from house. Water is popping up underneath the slab in the crawl space only when it rains. No plumbing or irrigation leaks and neighbors do not have this problem.

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2 Answers

2
Votes

Sounds to me like the french drain outlet is blocked or frozen - if you can track it or know where the outlet is, clear it out. IF there is a cleanout, you might be able to tape a small hand mirror down there on a stick and look through the drain to see where blockage is, by reflecting the light from a large flashlight (like 6V "lantern" type) - unless you have a wet well sump pump for the french drain, you should be able to see daylight at the end unless there is a sharp curve in it. If you do have a wet well, then check pump is operating when there is water in the sump.

If water coming up under slab does no real harm, you might be able to feed a hose with a jet nozzle like this on it -

http://www.harborfreight.com/4-inch-b...

down into the french drain till it stops, then turn on water full force and see if it blows out the end blockage. Obviously, if you know where end is much easier to attack from the outlet - usually a brighter green spot in the vegetation.

If not up to doing this yourself, a handyman might be able to do it. If you want more professional help, or water coming up through slab is to be avoided as much as possible, then a Sewer and Drain cleaning contractor is what you want - explain issue, and ask he bring camera along in case needed, as long as you don't have to pay for it if not used.

Answered 5 years ago by LCD

2
Votes

Good Advice LCD.


You can probably clear it as a homeowner.


Good luck and keep us posted.



Answered 5 years ago by WoWHomeSolutions




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