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sump pump installation

Why Does My Sump Pump Keep Running?


As spring approaches in Maryland, melting snow and seasonal rainfall can put extra strain on your home’s drainage system. If your sump pump is running constantly, it could indicate a potential problem that requires attention. Ignoring the issue can lead to increased wear on the system, higher energy costs, and even basement flooding. Understanding the reasons behind a continuously running sump pump and knowing how to fix it can help protect your home from costly water damage.

Common Causes of a Continuously Running Sump Pump

High Water Table

Maryland has areas with naturally high water tables, meaning groundwater sits close to the surface. If your sump pit is consistently filling with water, your sump pump may run continuously to keep up. While this might not indicate a mechanical issue, it can shorten the lifespan of your unit.

Heavy Spring Rainfall

Spring showers can lead to saturated soil, forcing excess water into your sump pit. If your sump pump is constantly cycling on and off during storms, it may be working as expected. However, a pump that continues running long after the rain has stopped could signal a drainage issue.

Clogged or Frozen Discharge Pipe

The discharge pipe is responsible for carrying water away from your home. If it becomes clogged with debris or freezes in colder weather, the pump may keep running because it cannot effectively expel water. This can lead to overworking the pump and potential failure.

Stuck Float Switch

The float switch is what activates the sump pump when water levels rise. If the switch becomes stuck due to debris or mechanical failure, the pump may not turn off even when the pit is empty.

Faulty Check Valve

A check valve prevents water from flowing back into the sump pit after being pumped out. If this valve is broken or missing, water can return to the pit, forcing the pump to remove the same water repeatedly.

Improperly Sized Pump

If your sump pump is too small for the volume of water entering the pit, it may run continuously as it struggles to keep up. Conversely, an oversized pump can cycle too frequently, leading to premature wear and tear.

Drainage System Issues

Poor exterior drainage around your home can cause excessive water to pool near the foundation. If gutters and downspouts are not directing water away properly, it may continuously enter your sump pit, keeping the pump running non-stop.

Solutions to Fix a Constantly Running Sump Pump

  • Inspect the Check Valve –  If your sump pump does not have a check valve or if the existing one is faulty, installing or replacing it can prevent water from flowing back into the pit.
  • Clean and Maintain the Discharge Pipe –  Ensure that the discharge pipe is clear of debris and free from blockages. If you suspect freezing, insulating the pipe can help prevent ice buildup.
  • Adjust or Replace the Float Switch –  If the float switch is stuck, repositioning it or replacing it may resolve the issue. Be sure there are no obstructions preventing it from moving freely.
  • Upgrade to a Properly Sized Pump –  If your current pump is undersized or oversized, consulting a professional for sump pump replacement can ensure you have a unit that matches your home’s needs.
  • Improve Home Drainage –  Extending downspouts, regrading the landscape, or installing a French drain can help redirect water away from your foundation, reducing the demand on your sump pump.
  • Schedule Regular Sump Pump Maintenance –  Routine sump pump maintenance, including cleaning the pit and testing the system, can help detect issues before they lead to failure. Homeowners should check their sump pumps at least once a year, particularly before the spring rainy season.
  • Consider a Battery Backup System – Power outages during storms can render your sump pump useless, increasing the risk of basement flooding. Installing a battery backup sump pump ensures your home remains protected even if the power goes out.

Why Spring is the Right Time for a Sump Pump Check-Up

March is an ideal time for Maryland homeowners to ensure their sump pumps are in good working order. With fluctuating temperatures, melting snow, and spring rains on the horizon, an unexpected sump pump failure could lead to costly water damage. Taking proactive steps now can help homeowners avoid emergency plumbing repairs and basement flooding.

When to Call a Professional

If your sump pump continues to run non-stop despite troubleshooting, it may be time to call a plumbing professional. A licensed plumber can assess the system, identify underlying issues, and recommend the best course of action, whether it’s a sump pump repair, replacement, or maintenance service.

Staton Heating, Cooling & Plumbing offers expert sump pump services in Maryland, including installation, repair, and maintenance. Our team is here to ensure your home stays dry and protected throughout the rainy season and beyond.

A constantly running sump pump can be a warning sign of underlying issues, from drainage problems to mechanical failures. Addressing the root cause promptly can prevent costly repairs and water damage. For all your plumbing, heating, and cooling needs, including sump pump repair and maintenance, contact Staton Heating, Cooling & Plumbing today.