Long Island's Basement Experts Since 2011
Sump Pump Installation Long Island
Protect your Long Island basement with a BSI-certified sump pump system. Single pump, dual pump, and battery backup systems for Nassau and Suffolk County homes.
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BSI Certified Installation
Sump Pump Systems for Long Island's High Water Table
Long Island's high water table makes sump pumps a necessity, not a luxury. In many Nassau and Suffolk County neighborhoods, the water table sits just 4–8 feet below grade. During heavy rainfall, that number can drop to 1–2 feet. Without a properly sized and maintained sump pump, basement flooding is a matter of when, not if.
Mike Costello, our BSI-certified waterproofing tech, has installed hundreds of sump pump systems across Long Island. He specs the right pump size (measured in GPH — gallons per hour) for your specific water table conditions, basement size, and drainage system.
Sump Pump System Options
Basic Submersible Pump
$800–$1,500Single 1/3 HP or 1/2 HP submersible pump in existing pit. Best for standard drainage volume. Motor replacement recommended every 7–10 years.
Dual Pump System
$1,500–$2,500Primary plus secondary pump in same pit. Secondary activates if primary fails or is overwhelmed. Better protection for high-risk areas.
Battery Backup System
$1,200–$2,000DC-powered backup pump activates when power fails or primary pump fails. Critical for storm protection on Long Island.
TripleSafe System
$2,500–$3,500BSI's premium system: primary, secondary, and battery backup in one unit. Maximum protection for Long Island's storm environment.
New Pit Excavation + Pump
$1,500–$3,500When no sump pit exists. We excavate, install drainage aggregate, set liner, and install pump system.
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Verified Local Work
Recent Sump Pump Jobs on Long Island
Real jobs completed by our crew across Nassau and Suffolk Counties.
Battery backup sump pump system after basement flooding
New sump pit excavation and pedestal pump installation with water alarm
Replacement of failed sump pump + added battery backup system
Got Questions?
Sump Pump Installation FAQs — Long Island
Basic sump pump installation (replacing existing pump in existing pit) costs $800–$1,500 on Long Island. New pit excavation plus pump installation runs $1,500–$3,500. A full system with battery backup and water alarm adds $800–$1,500 to the cost. BSI TripleSafe or equivalent premium systems are $2,500–$3,500 installed.
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