Why Is My Sump Pump Running Non-Stop? Causes and Solutions

Youmna Rehman

A sump pump is a crucial component of your home's drainage system, designed to keep your basement or crawlspace dry by removing accumulated water. However, a sump pump that runs continuously can indicate a problem, leading to unnecessary wear, energy consumption, and even potential flooding. Understanding why your sump pump won’t stop running is essential to resolving the issue and preventing long-term damage.


"What to Do If Your Sump Pump Fails During a Storm"


How a Sump Pump Works

A sump pump collects water in a pit (the sump basin) and pumps it away from your property to prevent flooding. Typically, it activates when water reaches a certain level, then turns off after the pit is emptied. Continuous operation suggests that something is disrupting this process.


Causes of a Sump Pump Running Non-Stop

1. Stuck Float Switch

The float switch controls when the pump turns on and off. If the float becomes stuck in the "on" position, the pump will keep running even if the water is gone. Debris, dirt, or improper positioning can often cause this issue.
Solution:
Inspect the sump pit for obstructions, clean the float switch, and reposition it to ensure free movement.


2. Faulty Check Valve

The check valve prevents water from flowing back into the sump pit after being pumped out. If it’s broken or missing, water can recirculate, causing the pump to run continuously.
Solution:
Replace the check valve with a functional one to ensure water flows only in one direction.


3. Excessive Groundwater

During heavy rains or in areas with a high water table, excessive groundwater can lead to constant inflow into the sump pit, keeping the pump running.
Solution:
While you can’t control natural conditions, ensure the drainage system is optimized to handle excess water efficiently.


4. Incorrect Sump Pump Size

An undersized pump may struggle to handle the water load, causing it to run non-stop, while an oversized pump might cycle too frequently. Both situations can wear out the pump prematurely.
Solution:
Consult a professional to determine if the pump size matches your home’s drainage needs.


5. Improper Discharge Pipe Setup

A clogged or improperly angled discharge pipe can prevent water from being expelled efficiently, causing backflow and continuous operation.
Solution:
Clear any obstructions in the discharge pipe and ensure it’s installed at the correct slope.


6. Malfunctioning Float Switch Mechanism

Beyond getting stuck, the float switch itself can fail, leading to constant operation even without water in the pit.
Solution:
Replace the faulty float switch or consider upgrading to a more reliable electronic sensor.


7. Sump Pump Running in Manual Mode

Some sump pumps have a manual override setting that keeps the pump running continuously. If accidentally activated, this could explain the nonstop operation.
Solution:
Check your pump’s settings and switch it back to automatic mode.


8. Electrical Issues

Faulty wiring or a malfunctioning control unit can cause the pump to stay on regardless of water levels.
Solution:
Have an electrician or plumber inspect the electrical components of your sump pump for repairs.


9. Old or Worn-Out Pump

An aging sump pump may develop mechanical issues, including failure to turn off when it should.
Solution:
If your pump is over 7–10 years old, consider replacing it with a newer, more efficient model.


The Risks of a Non-Stop Sump Pump

A continuously running sump pump can lead to:

  • Overheating: Prolonged operation can overheat the motor, causing it to fail.
  • Increased Energy Bills: Running non-stop can significantly increase electricity costs.
  • Premature Wear: Constant use shortens the lifespan of your pump.
  • Flooding Risk: A pump that fails due to overuse may leave your home vulnerable to flooding.


How to Fix a Sump Pump Running Non-Stop

If your sump pump runs without stopping, follow these steps:

  1. Inspect the Pit: Remove debris and ensure the float switch can move freely.
  2. Check the Check Valve: Ensure it’s functional and replace it if necessary.
  3. Evaluate the Discharge Line: Look for clogs or improper installation and fix any issues.
  4. Examine the Float Switch: Replace if stuck or malfunctioning.
  5. Seek Professional Help: If troubleshooting doesn’t resolve the issue, contact a plumber or sump pump specialist for a detailed inspection.


Preventing Future Issues with Your Sump Pump

  • Regular Maintenance: Schedule routine checks to clean and inspect your sump pump.
  • Install a Backup System: Use a battery-powered or water-powered backup pump to handle emergencies.
  • Upgrade the Pump: Invest in a high-quality sump pump suited to your home’s needs.
  • Test Periodically: Test your sump pump by pouring water into the pit to ensure proper operation.


Conclusion

A sump pump running non-stop is more than a minor inconvenience; it’s a sign of underlying problems that can lead to costly repairs or flooding if left unaddressed. By understanding the potential causes and solutions, you can take timely action to protect your home. Regular maintenance and professional assistance from trusted experts, like All City Plumbers can ensure your sump pump stays in peak condition, safeguarding your property year-round.

by Youmna Rehman 1 May 2025
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Drains clog because of everyday use—but not always in ways we notice right away. In the kitchen, grease, oil, and food scraps stick to pipe walls, harden, and build up over time. In bathrooms, hair, soap scum, and toothpaste form stubborn tangles that slow water flow. Laundry drains face detergent residue and lint. Even so-called “flushable” wipes can wreak havoc in toilet pipes. The challenge is that most of this buildup is gradual. You may not notice a problem until the water starts pooling or smells start rising—and by then, a full-blown clog could be just around the corner. Step-by-Step: How to Maintain Your Drains at Home Step 1: Flush Your Drains Weekly with Hot Water One of the easiest habits you can adopt is flushing your drains with hot water once a week. This helps melt away minor grease deposits and dislodge small bits of debris before they can build up. Simply boil a kettle of water and pour it slowly down your drain. For kitchen sinks, you can follow it with a squirt of dish soap to cut through any residual grease. Step 2: Use a DIY Baking Soda and Vinegar Cleanse This old-school method is a favorite for a reason—it works. Once a month, pour half a cup of baking soda down the drain, followed by one cup of vinegar. Let it sit and fizz for 15 to 30 minutes, then flush with boiling water. This mixture helps break down organic material and neutralize odors without using harsh chemicals. It’s especially useful for bathroom sinks and shower drains where buildup tends to be slow but persistent. Step 3: Install Drain Strainers or Hair Catchers Mechanical prevention is often the most effective. Installing strainers or mesh covers over your drains can dramatically reduce the amount of debris entering your pipes. In kitchens, they stop food scraps. In bathrooms, they catch hair. They’re inexpensive, easy to clean, and one of the smartest tools in your DIY maintenance kit. Step 4: Clean the Stoppers and Covers Drain stoppers in bathroom sinks and tubs collect grime over time. Every couple of weeks, remove and clean them thoroughly with hot water, an old toothbrush, and soap. This prevents buildup at the entry point of your drain and keeps water flowing smoothly. Step 5: Use Enzyme Cleaners Monthly Enzyme-based drain cleaners are a safe, eco-friendly way to maintain your plumbing. These cleaners use natural bacteria and enzymes to digest organic material in your pipes. Unlike chemical alternatives, they won’t corrode your pipes or kill beneficial bacteria in septic systems. Regular monthly use keeps your drains clean and odor-free. The Risks of Ignoring Drain Maintenance Many people wait until there’s a problem to think about their drains. But ignoring routine maintenance carries hidden risks. Minor clogs can turn into major backups, leading to overflows, water damage, and costly plumber visits. If you’re dealing with old pipes, recurring blockages can weaken their integrity and eventually cause leaks or breaks. Additionally, standing water from partial clogs creates a breeding ground for mold and bacteria, which can affect your indoor air quality. Odors, slow drainage, and constant plunging become part of your everyday routine—and that’s not a habit anyone wants. By contrast, maintaining your drains regularly prevents emergencies and keeps your home healthy and hygienic. Challenges You Might Face With DIY Drain Maintenance DIY drain care is effective, but it comes with a few challenges. First, it requires consistency. One-time fixes won’t cut it. Just like you wouldn’t brush your teeth once and forget it, drain maintenance has to be a habit. Second, you may encounter deeper problems that simple DIY methods can't solve—like tree root intrusion, damaged pipes, or long-standing grease clogs. In these cases, professional tools like snaking or hydro jetting may be necessary. Finally, not all products work for every type of drain. Enzyme cleaners may be perfect for organic buildup but won’t help with mineral deposits or foreign objects. You’ll need to understand your system and use the right tools at the right time. Expert Advice: What Plumbers Recommend for Homeowners Most plumbers agree on one thing: Prevention is cheaper and easier than repairs. They often recommend homeowners adopt a monthly maintenance routine and take steps to avoid the most common clogging culprits. Grease is one of the worst offenders. Never pour it down the drain, even if you flush it with hot water. Instead, collect it in a jar and dispose of it in the trash. Similarly, hair may seem harmless, but it binds with soap and forms heavy clumps that are hard to dislodge. Experts also recommend keeping a plunger and drain snake handy for minor clogs. These manual tools are your first line of defense and often solve problems without the need for chemicals or a professional visit. Preventive Habits That Make All the Difference Incorporating small habits into your routine can have a big impact. Run hot water for a few seconds after using the sink to help push residue through. Don’t treat your garbage disposal like a trash can—avoid fibrous foods like celery, eggshells, and coffee grounds. Always dispose of hygiene products in the trash, no matter what the label says. And when in doubt, install a catch-all filter. By combining these habits with monthly enzyme treatments and occasional deep cleaning, you can keep your entire drain system running like new. Conclusion: Stay Ahead of Clogs with Simple, Smart Maintenance Taking care of your drains doesn’t require fancy tools or a plumber on speed dial. It’s about adopting a mindset of prevention and following through with simple, consistent actions. From flushing with hot water to monthly enzyme cleanings and mindful kitchen habits, DIY drain maintenance is both achievable and impactful. By investing just a little time each week, you can save yourself the frustration, cost, and mess of clogged pipes later on. So start today—your future self (and your plumbing) will thank you
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