A submersible pump sits at the bottom of a sump pit, fully underwater. This submersible pump activates when a float switch detects rising water. Unlike pedestal models, the submersible pump operates quietly because the motor is submerged.

The sealed housing of a submersible pump prevents water from reaching the electrical parts. A reliable submersible pump can handle small solids and debris without clogging. Many homeowners install a backup submersible pump in case the primary unit fails.

When the pit fills, the submersible pump pushes water through a discharge pipe away from the foundation. Checking the check valve on a submersible pump prevents backflow after it shuts off. The submersible pump’s impeller is made of engineered plastic or cast iron.

For finished basements, a submersible pump with a battery backup provides peace of mind. Annual testing of the submersible pump ensures it will start when needed. Replacing an old submersible pump every five to seven years is common practice. Overall, a dependable submersible pump keeps lower levels dry and protects property value.