Plumbing – Strange sump pump install by plumber

plumbingsump-pump

I'm thinking about finishing my basement but at the bottom of my stairs the plumber installed a very strange setup for my sump pump. See attached picture.

enter image description here

Ive never seen this before so I wanted to know if I could shorten this.
My neighborhood is on a hill/rise and the house is about in the middle. There's a collection pond at the bottom.

Edit: the PVC pipe is connected to the storm drain on the left and to the sump pump in the pit on the right. I want to make this setup smaller by shortening the black pvc pipe from the ceiling to the floor. I don't even know why this setup is necessary since it's connected to a storm drain. This is in my basement which is underground.

Best Answer

This should be a back flow-prevention measure, for flash flooding rains. I think your only good, but expensive ($1000), option would be to replace this setup with a Back-Flow Prevention Valve or Check Valve. Call the Builder or get a qualified Plumber...have them checkout your Water Supply Line too, that thing looks 100-years old. Otherwise, turn that corner into a closet or faux bookshelf.