A sump pump only has to work on the worst nights of the year, which is exactly why it needs to be checked before those nights arrive. The short version of this checklist: test the pump with a bucket of water every three months, keep the pit and discharge line clear, make sure the check valve and backup system work, and have a professional inspect the whole setup once a year.
On Long Island, sump pumps work harder than in many places. Heavy spring rain, nor'easters, tropical storms, late-winter snowmelt and, in low-lying and coastal neighborhoods, a high water table all push water toward basement walls. Here's the maintenance routine we recommend to homeowners, supers and property managers across Nassau and Suffolk counties, including what you or your building staff can safely do and what's worth leaving to a pro.
Why Long Island Basements Depend on Their Sump Pumps
Most sump systems collect groundwater from drain tile around or under the foundation and send it to a pit in the basement floor, where the pump lifts it outside. A few local conditions make that job tougher:
- High groundwater in South Shore and other low-lying areas, which can keep pumps running for days after a storm.
- Nor'easters and tropical storms that drop inches of rain in a few hours. Atlantic hurricane season runs from June through November.
- Frozen ground and snowmelt in late winter, when water can't soak into the soil and heads for the foundation instead.
- Power outages during those same storms, which stop a standard pump exactly when it's needed most.
Safety First
Safety: Unplug the pump before touching it, lifting it or reaching into the pit. The pump should be plugged directly into a GFCI-protected outlet, never an extension cord. If the basin has a sealed, bolted lid or smells like sewage, it's a sewage ejector, not a sump pump, so don't open it. Our guide to sewage ejector pumps vs. sump pumps explains the difference.
Every Three Months: The Quick Test
This takes about 15 minutes and catches most problems before they cause a flood. Do it more often during a wet season or before a big storm is forecast.
- Do the bucket test. Slowly pour water into the pit until the float rises. The pump should start, empty the pit quickly and shut off on its own.
- Watch the float. It should move freely without catching on the pit wall, the power cord or the discharge pipe.
- Listen while it runs. Grinding, rattling or a hum with no water moving means the motor or impeller needs attention.
- Check the check valve. When the pump stops, water in the discharge pipe should not rush back into the pit. A loud thump or a pit that refills right away suggests a failing check valve.
- Look at the outlet outside. The discharge should be free of leaves, dirt and ice, and it should send water well away from the foundation rather than back toward it.
- Test the GFCI and alarm. Press test and reset on the outlet, and test your high-water alarm if you have one.
Once a Year: Clean the Pit and Pump
- Unplug the primary pump and any battery backup.
- Remove standing water, then scoop or vacuum silt, gravel and debris from the bottom of the pit with a wet/dry vac.
- If the pump is accessible and the discharge has a union, lift the pump out and rinse the intake screen.
- If your discharge pipe has a small weep hole between the pump and the check valve, make sure it's clear. It prevents air lock, which can let a pump run without moving water.
- Inspect the pump, pipe and fittings for rust, cracks or loose connections.
- Set the pump back upright and level in the pit, plug it in and repeat the bucket test.
If you aren't comfortable disconnecting the pump, fold this into an annual professional inspection instead.
Seasonal Checklist for Long Island Homes
| Season | What to do | Why it matters |
|---|---|---|
| Fall | Clean the pit, test the pump and backup, clear gutters and extend downspouts away from the house | Gets you ready for nor'easters and freezing weather |
| Winter | Keep the discharge outlet clear of snow and ice and confirm the line drains | A frozen discharge line can leave the pump running without moving water |
| Spring | Test before the thaw and spring rains; note how often the pump runs after storms | Snowmelt and rain raise groundwater quickly |
| Summer | Test the battery backup and alarm; plan for power outages | Hurricane season peaks in late summer and early fall |
For more cold-weather steps, see our guide on preparing your pumps for a New York winter.
Don't Forget the Backup System
Primary pumps fail, and storms knock out power. A backup gives you a second line of defense:
- Battery backup pumps take over when power fails or the primary pump can't keep up. Test them by unplugging the primary pump and running the bucket test, check the charger's status light, and replace the battery on the schedule the manufacturer recommends.
- Water-powered backup pumps use municipal water pressure instead of electricity. They need adequate water pressure and proper backflow protection, should be installed by a professional, and won't work on a private well, since the well pump stops when the power does.
- Generators can keep the primary pump running through long outages, as long as the connection is set up safely.
Signs Your Sump Pump Needs Professional Repair
- The pump runs constantly, even in dry weather.
- It turns on and off in rapid, short bursts.
- It hums but doesn't move water, or water keeps rising while it runs.
- It trips the GFCI outlet or breaker.
- You see rust, corrosion or a cracked housing, or the pump vibrates noticeably.
- The discharge line clogs or freezes repeatedly.
- The pump is getting old. Many sump pumps last somewhere around seven to ten years, depending on how often they run.
Constant running can mean a stuck float switch, a failed check valve that lets the same water cycle back into the pit, or a high water table that's more than the pump was sized for. A technician can measure the motor's amp draw, test the switch, inspect the check valve and discharge line, and confirm whether the pump suits your pit and inflow. Our sump pump repair team handles repairs, replacements and battery backup installations, and homes with a high-water alarm panel or a two-pump setup may also need pump control service.
What to Do If Your Basement Is Flooding
- If water has reached outlets, appliances or the electrical panel, stay out of the water and don't touch anything electrical.
- Otherwise, check whether the GFCI outlet or breaker has tripped.
- With the pump unplugged, make sure the float isn't stuck against the pit wall, then plug it back in.
- Move valuables to higher ground and switch to the backup pump if you have one.
- Call for emergency service.
Water rising and the pump can't keep up? LA New York Pump provides 24/7 emergency sump pump service across Long Island. Call (631) 565-9577.
Stay Ahead of the Next Storm
Whether you live in Suffolk County, Nassau County or elsewhere on Long Island, or you manage an apartment complex or condo community there, a yearly inspection is the easiest way to know your sump pumps are ready. We work on submersible and pedestal sump pumps, battery and water-powered backups, and two-pump systems with alarm panels. Call LA New York Pump at (631) 565-9577 to schedule a visit before storm season.
Frequently asked questions
How often should I test my sump pump?
Test it at least every three months and before any major storm. Slowly pour a bucket of water into the pit until the float rises; the pump should start, empty the pit and shut off on its own. If it hums, runs without moving water or does not start, call for service.
Is it normal for a sump pump to run all the time?
After heavy rain or snowmelt, or in areas with a high water table, a pump may run often for days. Constant running in dry weather is not normal and usually points to a stuck float switch, a failed check valve that lets water fall back into the pit, or a pump that is undersized for the inflow.
Do I need a battery backup sump pump on Long Island?
For most finished or valuable basements it is worth having. The storms that fill sump pits are often the same storms that cause power outages. A battery backup takes over when power fails, and homes on municipal water can also consider a water-powered backup, which does not need a battery.
Where should my sump pump discharge?
Outside, to a spot that carries water well away from the foundation, such as a lawn area or a drywell. Sump water generally should not go into the sanitary sewer, and many municipalities prohibit it, so check with your town before changing where the discharge line runs.
We are a family-owned pump repair company serving NYC, Long Island and Westchester. Questions about your pumps? Call (631) 565-9577 any time.
