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Question DetailsAsked on 9/17/2016

how much to reroute my sump pump drain

It currently drains into the garage

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1 Answer


Depends - if the line can readily be extended at a good slope (at least 2%, preferably more like 5%) from some point in its current path to the outside and still terminate a foot or more above the ground, probably minimum service call [typically $75-150 for a plumber or $50-75 for a Handyman] and about $20-50 materials depending on length of run (assuming current discharge pipe is plastic pipe). May also be possible to raise the discharge pipe at the pump to a higher point (limited by ceiling height of course) and then get decent drainage slope to an outside discharge point.

If access is bad, have to tear into walls to run pipe (rather than through unfinished crawlspace or basement or such), or current discharge pipe is small (smaller than 2 or possibly 3 inch) AND the run is long so it needs to be upsized, could add commonly about $100 for each of those conditions which are applicable in your case.

This is (assuming current discharge pipe is PVC or ABS or similar plastic) also a pretty easy DIy job - the pipe cleaner and glue [be sure to get right type for type of pipe you have] each come in cans down to about $5-7 each (1/2 pint cans) and the pipe with fittings and hangers run about $2-4/LF ballpark - you just want to be sure the total lift does not exceed what the pump is rated for (commonly 10 feet or more) and is kept as low as feasible, go to maximum height right above the pump then downhill from there to discharge, be sure to critter-seal any exterior wall penetrations, and be sure discharge is at a place where it will not saturate the foundation (so may need exterior drain channel or trough) and where it will not ice up soild in winter. This line is very low pressure unless you have an unusually high lift to discharge, so you do not have to worry about getting the joints perfect - prep and gluing is pretty simple.

Answered 3 years ago by LCD

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