Home is about 7 y/o. The sump pump output exists the house and goes down below ground. The gutter downspouts also empty to pipes below ground. Recently, whenever the sump pump works, the water comes up the gutter downspouts and spews out. I've taken a hose and run water through the downspout and it does not back up. I've removed the exterior sump pump (where it turns down into the ground) access plug and run water through it and there is no backup. I thought that there might be some clog, but if the water hose is not backing it up, then I don't know if its a clog or not. Does anyone have any idea what is going on? Is there a specific clog I should look for? How do I figure out what is going on? How do I fix this? Help is appreciated.
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