Sump Pump
An electric pump installed in a basement or crawlspace pit that automatically discharges groundwater away from the foundation when the water level rises.
Quick answer
Sump Pump: An electric pump installed in a basement or crawlspace pit that automatically discharges groundwater away from the foundation when the water level rises. Typical cost: $300–$700 for the pump; $1,200–$3,500 installed with battery backup and discharge plumbing..
Why it matters
A working sump pump is the difference between a dry basement and a $20,000 flood claim — insurance typically does not cover sump failures unless you add the water-backup endorsement.
Typical cost
$300–$700 for the pump; $1,200–$3,500 installed with battery backup and discharge plumbing.
Pros
- • Prevents basement flooding
- • Pairs with battery backup for power outages
- • Low operating cost
Cons
- • Fails silently — needs annual testing
- • Battery backup adds $400–$1,000
- • Not covered by standard insurance unless endorsement added
Common uses
- • High-water-table basements
- • Crawlspace moisture control
- • Walk-out and below-grade additions
Alternatives
French drain to daylightInterior perimeter drainExterior waterproofing
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Frequently asked questions
- How often should a sump pump run?
- It depends on your water table. Test it monthly by pouring water into the pit — it should kick on within seconds.
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