Sump Pumps: Unsung Heroes for Dry NJ Basements

Central and Northern New Jersey tends to experience more rainfall than the national average, as flooding from hurricanes and tropical storms becomes an annual threat. 

Low-lying valleys, such as the confluence of rivers in Hunterdon County or the Rahway River basin, may be more at risk for flooding from nearby rivers, but even higher elevation areas, such as the Kittatinny Mountains in Sussex County, can be just as at risk from flooding. 

When it comes to protecting your basement from water damage, sump pumps and a French drain system are the best line of defense to discharge water and keep your basement dry. 

Contrary to popular opinion, sump pumps with battery backups are highly effective in storms and will not cease working even when the power goes out. 

Often overlooked until a storm hits, these devices quietly protect your home from flooding, groundwater infiltration, and costly water damage.

Let’s take a look at how sump pumps work and why sump pumps are a central feature of United Waterproofing’s waterproofing system

The Importance of Sump Pumps for a Dry New Jersey Basement

What Is a Sump Pump?

 

A sump pump is a mechanical device installed in a sump pit, usually located at the lowest point of a basement or crawlspace. When water collects in the pit, the pump automatically activates and discharges the water safely away from your foundation, keeping your basement dry.

There are two main types of sump pumps:

  • Submersible pumps: Installed inside the sump pit and designed to operate underwater. These tend to be quieter and more powerful. United Waterproofing only uses pumps made in the USA.
  • Pedestal pumps: Mounted above the pit with the pump motor elevated. These are easier to service but typically less powerful than submersible models.

Both pumps operate similarly, but differ in their installation location.

How Do Sump Pumps Work?

Sump pumps mechanically discharge water from your basement using many of the same mechanics and tools as your plumbing system. Here’s how it works:

  1. Water Collection: Water seeps into the sump pit from natural groundwater, surface runoff, or interior drainage systems such as French drains.
  2. Activation: When the water level rises, a float switch or pressure sensor triggers the sump pump.
  3. Water Removal: The pump directs water through a discharge pipe that leads away from the foundation.
  4. Continuous Protection: Many pumps are designed to run automatically whenever needed, providing around-the-clock protection during storms or snowmelt.

Why Sump Pumps Are Critical for Basement Waterproofing

There are a dozen tools and methods to keep your basement dry, from exterior waterproofing to foundation repair. Nevertheless, sump pumps are the best line of defense when all of those other methods fail and you are dealing with heavy runoff from a storm. 

Here are a few reasons why sump pumps are a necessary investment for anyone in a flood-prone zone or who has experienced water buildup in the past. 

1. Preventing Basement Flooding

During heavy rain, snowmelt, or plumbing failures, sump pumps remove large volumes of water quickly, preventing it from pooling in the basement and damaging flooring, drywall, and belongings.

2. Managing Groundwater Pressure

In regions with high groundwater levels, water naturally presses against basement walls and floors, creating hydrostatic pressure.

Left unmanaged, this pressure can cause cracks and leaks. A sump pump relieves that pressure by actively removing infiltrating water.

3. Supporting Other Waterproofing Systems

Even with exterior membranes and interior drainage systems, water can still find its way to the foundation.

Sump pumps act as the final safeguard, collecting and expelling any water that enters. Without a sump pump, other waterproofing measures are incomplete.

4. Protecting Indoor Air Quality

Excess moisture can lead to musty odors, mold growth, and poor indoor air quality.

By keeping the basement consistently dry, sump pumps help prevent these issues before they take hold.

Best Practices for Sump Pump Maintenance

Most sump pumps are fairly robust when it comes to managing stormwater runoff in your basement, sometimes they need a little maintenance to work their best. 

Try to create an annual maintenance plan every spring to care for your sump pump and sump pit:

With regular maintenance and other waterproofing measures, you can keep your New Jersey basement dry for decades to come, avoiding costly repairs and cleanup. 

With regular maintenance and other waterproofing measures, you can keep your New Jersey basement dry for decades to come, avoiding costly repairs and cleanup. 

Frequently Asked Questions

Do all basements need a sump pump?

Homes with dry basements and proper exterior drainage may not require a sump pump.

However, in areas with frequent rain, high groundwater, or a history of flooding, a sump pump is strongly recommended.

Likewise, if you are finishing a basement, then a sump pump and french drain is highly recommended. 

How long do sump pumps last?

Most pumps last between 5 and 7 years or longer with proper maintenance.

Heavy usage or poor maintenance may shorten their lifespan.

What happens if my sump pump fails during a storm?

Without a functioning sump pump, your basement could flood quickly. A battery backup system or secondary pump provides critical protection.

Can a sump pump run continuously?

Yes, but if a sump pump runs constantly even during dry weather, it may indicate a high water table, a stuck float switch, or a drainage issue that needs attention.

Where should sump pump water be discharged?

At least 3 feet away from your home’s foundation, preferably downhill or into a designated drainage area to prevent water from flowing back.

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