What is a Sump Pump and Why Do You Need One?

If you own a home with a basement or crawl space, you’ve probably heard the term sump pump tossed around—usually right after someone mentions heavy rain, flooding, or water damage. But what exactly is a sump pump, and why is it such an important part of protecting your home?

Let’s break it down in simple, homeowner‑friendly terms.

What Is a Sump Pump?

A sump pump is a small, automatically operated pump installed in the lowest part of your home—typically in a basement or crawl space. Its job is simple but essential: remove water before it causes damage.

Here’s how it works:

A sump pit (a small basin) is created in the floor:

• Groundwater or excess moisture naturally collects in this pit.
• When water reaches a certain level, the pump activates automatically.
• The pump pushes that water through a discharge pipe and safely away from your home’s foundation.

Think of it as your basement’s personal “flood prevention team,” always on standby. There are two main types of sump pumps: pedestal and submersible. The differences are shown below.

There are 2 main types of sump pumps: pedestal (less expensive) and submersible (more expensive). We’ll cover the difference between the 2 below.

Pedestal

As the name implies, pedestal sump pumps have a motor mounted on a pedestal. The pump draws water through a hose that goes down into the sump reservoir.

Compared to submersible models (see section below), pedestal sump pumps:

• Cost less
• Last longer (25–30 years compared to 10–15 years)
• Are easier to access because they sit above the reservoir, not in it

Submersible

While pedestal sump pumps sit above the sump reservoir to pump water out, submersible sump pumps sit inside of it.

Compared to pedestal models, submersible sump pumps:

• Are quieter and take up less space (because they sit in the reservoir)
• Have stronger motors, making them more suitable for flood-prone areas
• Aren’t prone to clogging
• Are more expensive

Why You Need a Sump Pump

Even if your home has never flooded, a sump pump can still be a critical investment. Here’s why:

1. Prevents Basement Flooding

Basements are naturally prone to collecting water. Heavy rain, melting snow, rising water tables—all can lead to sudden flooding. A sump pump quickly removes that water before it becomes a disaster.

2. Protects Your Foundation

Excess groundwater puts pressure on your home’s foundation (called hydrostatic pressure). Over time, this can lead to:

• Wall cracks
• Shifting
• Water seepage
• Mold growth

A sump pump relieves that pressure by moving water away from the foundation.

3. Reduces Mold and Mildew

Moisture is mold’s best friend. Even small amounts of standing water—or persistent dampness—can lead to unhealthy air quality in your home. By keeping the basement dry, a sump pump helps you maintain a healthier living environment.

4. Protects Your Belongings

Whether your basement is fully finished, used for storage, or houses valuable HVAC and electrical systems, water can cause costly damage in minutes. A sump pump minimizes risk and helps avoid expensive repairs.

5. Increases Your Home’s Value

Many home buyers see a sump pump as a major plus. It tells them:

• The home is protected
• The basement is dry
• Water damage is less likely

It’s a small investment that supports long‑term property value.

Signs You Need a Sump Pump (or an Upgrade)

You should strongly consider installing—or replacing—a sump pump if you notice:

• Damp or musty basement odors
• Water stains on the basement floors or walls
• A history of flooding (even minor events)
• High water tables or heavy rainfall in your region
• Appliances like furnaces or water heaters installed in the basement

If you are curious about the cost of installing or upgrading a sump pump, you can refer to our help guide “How Much Does a Sump Pump Installation Cost in Denver” or schedule an appointment, and we’ll send one of our plumbers to your home to help you find the right size sump pump and give you an upfront price quote. You can learn more about sump pump installation and replacement here.