As the temperatures drop and your swimming pool goes into hibernation mode, proper winter maintenance becomes crucial to protect your investment. At Waterworx, we often get asked: “Should I lower my pool water level in the winter?” The short answer is: No — in fact, you should keep the water high under the pool cover and always use a cover pump. Here’s why.
1. Supports Your Pool Cover
A high water level under your pool cover helps support the weight of snow, ice, rain, and debris that accumulate over the winter. Without that support, the cover can sag or stretch, potentially leading to damage or tears. A sagging cover also puts strain on your pool coping, anchors, and safety cover springs.
2. Prevents Pool Cover Damage
When water is too low, the pool cover has no “cushion” beneath it. That means anything heavy — like snow or ice — is putting full pressure on the cover alone. This can cause:
• Rips or tears in vinyl covers
• Broken safety cover anchors
• Stretching and wear on fabric and mesh
By keeping the water high, you extend the life of your pool cover and avoid costly repairs in spring.
3. Improves Safety
A supported pool cover is safer for children, pets, and wildlife. If someone accidentally steps on a well-supported safety cover, the underlying water helps prevent a fall or injury. Without enough water underneath, even a safety cover can fail under sudden pressure.
4. Why You Still Need a Cover Pump
Now that your pool water level is high, you might wonder: Do I still need a cover pump? Absolutely — and here’s why:
• Prevents Standing Water: Rain, snowmelt, and ice accumulation can weigh down your cover. A cover pump removes excess water and prevents sagging.
• Stops Algae Growth: Standing water on top of your cover can become a breeding ground for algae, bacteria, and even mosquitoes.
• Protects the Pool Water: If the dirty water from the top leaks into your pool, it can contaminate your clean, winterized water and throw off your chemical balance.
At Waterworx, we recommend using an automatic cover pump that turns on when it senses water buildup. It’s one less thing to worry about all winter.
5. Bonus Tip: Check Regularly
Even with the right water level and a cover pump in place, it’s important to:
• Check your pool cover after major storms
• Ensure the pump is working
• Remove large debris (leaves, branches, etc.) manually
Regular checks throughout winter can prevent surprises in spring.
Final Thoughts
Keeping your pool water level high under the cover and using a quality cover pump is a smart, simple way to protect your pool all winter long. It saves you time, money, and stress when it’s finally time to open your pool in the spring.
If you have questions about winterizing your pool or need help choosing the right cover pump, Waterworx is here to help. Contact us today for expert advice and the best pool maintenance gear.


