Underground sump pump discharge burial cost
By My Yard Editorial Team · 7/28/2026
The Quick Answer
Burying a discharge line runs $15–$35 per linear foot, or typically $800–$2,500 for a run to daylight. Add a pop-up emitter for about $75.
The Witty Breakdown
The reason people do this: a discharge hose dumping next to the foundation just recycles the same water back into the sump. You're paying to pump the same gallon forever.
The mistake people make: burying it flat, or too shallow, so it freezes solid in January and the pump burns out.
Step-by-Step Fix
- 1
Use solid (non-perforated) SDR-35 or schedule 40 pipe, never corrugated flex.
- 2
Slope at least 1% continuously to daylight.
- 3
Bury below frost line where possible, or add a freeze-relief tee near the house.
- 4
Finish with a pop-up emitter at least 15 feet from the foundation.
Pro-Tip / Do Not Do This
Never tie the sump line into a French drain or the sanitary sewer. One backfires, the other is illegal in most towns.
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