Splash back in kitchen sink from upstairs toilet

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backdown00

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Hello All,

I have a very interesting problem. When the upstairs toilet is flushed, there is splash back into the kitchen sink of water. It doesn't fill it crazy at all, it just water splashes up from the drain.

I called in the water company and had them clear any clogs. The issue still pertains and they feel it has nothing to do with a clog, but the way the piping is, the water must be flowing down at such a force its causing water to splash back into the sink.

Does anyone know what can be done about this that doesn't involve destroying the whole house (ripping down tons of ceilings).

Could the piping under the sink be done maybe a little more to allow more room in the pipes for the splash back to stay there and not pop back into the sink? I have never seen anything like this so it is boggling my mind.

thank you!
 
Post a picture of the piping under the sink.

Hello John,

See below for a picture:

riu55k.jpg


Thank you!
 
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