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What Can Cause a Weak Sump Pump Flow?

sump pump

A sump pump plays an important role in keeping your basement or crawl space dry. Sump pumps prevent flooding by collecting groundwater as it rises through cracks in the foundation. In the event of flooding, sump pumps work to drain the water by pumping it through a pipe so it drains away from the house. There are two common types of sump pumps:


A submersible sump pump sits below the surface of the basement floor.


A pedestal pump sits above the basin and is typically a louder pump than a submersible pump.

Sump pumps are powered with electricity by plugging into a standard wall outlet with a ground-fault circuit interrupter (GFCI). Depending upon the model, a sump pump may have battery back-up in case of power outage.


Given a sump pumps important role in preventing a flooded basement or crawl space, it’s important that the pump has strong flow for pumping water away from the house. What can cause a weak sump pump flow? Here are a few possible causes:

  • Clogged Screens-A clogged screen on your sump pump is certainly a possible source of weak flow.
  • Switch Issues-Switches can become disconnected and may contain debris.
  • Frozen drainage pipes-With cold weather, a frozen drainage pipe is another possible cause of weak flow.

A sump pump is an electrical piece of equipment that should only be handled by a professional. As with any home maintenance, it’s better to be proactive rather than reactive. Don’t wait for a disaster to flood your basement before checking your sump pump. Our professional staff will check for clogged screens, switch issues, and any other problems that may be keeping your sump pump from fully functioning. To schedule an appointment, contact us today!

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