Sump Pump Keeps Running Non-Stop? What's Wrong and How to Fix It

If you live in the Lower Mainland, you know that our rainy season is no joke. From November through April, the Pacific Northwest weather brings relentless rain, putting our home drainage systems to the ultimate test. For many homeowners in Surrey, Burnaby, Vancouver, and Coquitlam, a sump pump is the unsung hero that keeps basements dry and foundations secure. But what happens when that hero works a little too hard? If your sump pump keeps running non-stop, it is a clear sign that something is wrong.

A continuously running sump pump is not just an annoyance; it is a serious issue that can lead to premature pump failure, skyrocketing electricity bills, and, ultimately, a flooded basement. In this comprehensive guide, we will explore the specific reasons why your sump pump might be running continuously, how to troubleshoot the problem, and when it is time to call in the professionals at Budget Heating & Plumbing Services.

Why Is My Sump Pump Running Continuously?

Understanding the root cause of a non-stop sump pump is the first step toward finding a solution. In the Lower Mainland, our unique geography, high water tables, and clay-heavy soil contribute to specific drainage challenges. Here are the most common reasons your sump pump might be working overtime.

1. High Water Table and Continuous Groundwater Seepage

One of the most frequent causes of a continuously running sump pump in the Fraser Valley and Lower Mainland is a high water table. During periods of heavy, prolonged rain, the ground becomes saturated. Because much of our local soil is clay-heavy, it does not drain quickly. Instead, the water pools around your foundation and continuously seeps into your sump pit.

If you live in a low-lying area or near a body of water, your sump pump might just be doing its job by constantly removing the groundwater that is naturally trying to enter your basement. However, if the pump is running non-stop even during dry spells, the issue likely lies elsewhere.

2. A Stuck or Malfunctioning Float Switch

The float switch is the brain of your sump pump. It works much like the float in a toilet tank: as the water level in the sump pit rises, the float rises with it. Once it reaches a certain height, it triggers the pump to turn on. When the water level drops, the float lowers, and the pump turns off.

Over time, the vibrations from the pump can cause it to shift inside the pit, leading the float switch to become pinned against the side of the basin. If the float gets stuck in the "up" position, the pump will continue to run, thinking the pit is full of water even when it is completely dry. This is a very common and easily fixable issue.

3. A Failed or Missing Check Valve

The check valve is a crucial component installed on the discharge pipe of your sump pump. Its job is to ensure that water only flows in one direction—out of your house. When the pump turns off, the check valve closes, preventing the water remaining in the discharge pipe from flowing back into the sump pit.

If the check valve is broken, missing, or improperly installed, the water that was just pumped out will flow right back into the pit as soon as the pump shuts off. This raises the water level, triggering the float switch, and causing the pump to turn on again. This creates an endless cycle of pumping the same water over and over, which will quickly burn out the motor.

4. An Undersized Sump Pump

Sump pumps come in various sizes and horsepower ratings, typically ranging from 1/4 HP to 1 HP. If your pump is too small for the volume of water entering the pit, it will struggle to keep up. An undersized pump will have to run continuously just to manage the normal flow of water, especially during a heavy Lower Mainland rainstorm.

If your home has a large footprint, a deep basement, or is situated in an area with a particularly high water table, a standard 1/3 HP pump might not be sufficient. Upgrading to a 1/2 HP or 3/4 HP model, such as those from reputable brands like Liberty Pumps or Zoeller, might be necessary to handle the load efficiently.

5. Clogged or Frozen Discharge Line

The discharge line is the pipe that carries the water from your sump pump to the outside of your home. If this line becomes clogged with dirt, debris, or ice, the pump will not be able to expel the water. The pump will continue to run, trying to push water through a blocked pipe, which can lead to overheating and failure.

In the Lower Mainland, while we do not experience deep freezes as often as the rest of Canada, a sudden cold snap can freeze the water in an improperly sloped or uninsulated discharge line. Additionally, if the discharge pipe ends too close to the foundation, the water might just seep back into the ground and re-enter the sump pit.

How to Troubleshoot a Non-Stop Sump Pump

If you notice your sump pump running continuously, do not ignore it. Follow these troubleshooting steps to identify and potentially resolve the issue before it leads to a costly failure.

Step 1: Check the Float Switch

The first and easiest thing to check is the float switch. Look inside the sump pit and see if the float is tangled, stuck against the side of the basin, or obstructed by debris. If it is, simply reposition the pump to the center of the pit so the float can move freely up and down.

Step 2: Inspect the Check Valve

Listen closely when the pump turns off. You should hear a distinct "clunk" sound as the check valve closes. If you do not hear this sound, or if you see water rushing back into the pit from the discharge pipe, your check valve is likely failing. Replacing a check valve is a relatively inexpensive fix, but it is crucial for the longevity of your pump.

Step 3: Examine the Discharge Line

Go outside and locate where the discharge pipe exits your home. Ensure that the pipe is clear of any obstructions, such as leaves, dirt, or snow. Check that the water is being directed at least 6 to 10 feet away from your foundation and that the ground slopes away from your house. If the pipe is clogged or frozen, you will need to clear the blockage immediately.

Step 4: Assess the Water Flow

Look at the water entering the sump pit. Is it a slow trickle or a steady stream? If there is a massive amount of water entering the pit, your pump might just be overwhelmed. In this case, you may need to consult a drainage expert to assess your perimeter drainage (weeping tile) system or consider upgrading to a higher-capacity pump.

When Is It Normal vs. Concerning?

It is important to distinguish between a sump pump that is working hard and one that is malfunctioning.

**When it is normal:** During a severe multi-day rainstorm in November, it is completely normal for your sump pump to run frequently—perhaps every few minutes. If you live in an area with a known high water table, such as parts of Richmond or South Surrey, your pump will naturally run more often than a home on higher ground.

**When it is concerning:** If your pump is running continuously without ever shutting off, even for a few seconds, that is a major red flag. Similarly, if the pump is running non-stop during a dry week in July, you almost certainly have a mechanical issue, a plumbing leak, or a broken check valve. A pump that runs constantly will eventually overheat and fail, leaving your basement vulnerable to flooding.

Get a Free Estimate

Every home is different, and pricing depends on your specific situation. Contact Budget Heating & Plumbing at **604-343-1985** for a free, no-obligation estimate tailored to your needs.

Why Choose Budget Heating & Plumbing Services?

When it comes to protecting your home from water damage, you need a team you can trust. Budget Heating & Plumbing Services has been serving the Lower Mainland and Fraser Valley for over 13 years. As a BBB A+ rated company, we pride ourselves on delivering honest, reliable, and expert service.

Our licensed, bonded, and insured technicians understand the specific drainage challenges of BC homes. We are well-versed in local building codes and municipality requirements, ensuring that every installation is done safely and correctly. Whether you need a simple check valve replacement, a sump pump upgrade, or a comprehensive assessment of your home's drainage system, we have the expertise to get the job done right.

Do not wait for your overworked sump pump to fail during the next big storm. If your pump is running non-stop, making strange noises, or struggling to keep up, contact us today.

**Call Budget Heating & Plumbing Services at 604-343-1985 to schedule an inspection and keep your basement dry all year round!**