Maintaining a swimming pool isn’t just about regular cleaning and chemical balancing. It also involves proper care of the pool cover, especially during the off-season or after heavy rain. One of the most common—and potentially damaging—problems pool owners face is standing water on the pool cover. If left unaddressed, standing water can lead to algae growth, structural damage to the cover, and even harm to the pool’s interior. In this comprehensive guide, we’ll walk you through everything you need to know about how to remove standing water from pool covers, why it’s important, and how to prevent it from happening in the future.
Understanding Standing Water on Pool Covers
What Causes Standing Water on Pool Covers?
Standing water typically appears after heavy rainstorms or snow melt. Pool covers, especially solid winter covers, can sag under the weight of accumulated water. If the cover is not properly secured or sloped for drainage, water pools in the center or in low spots.
Another common cause is poor water tensioning. If the cover is too loose, it creates indentations where water naturally collects. Even the cleanest, most durable covers can suffer from water accumulation if installed incorrectly.
Why Is Standing Water a Problem?
Standing water on a pool cover isn’t just unsightly; it’s a threat to your pool system. Here’s why:
- Structural Stress: Water weighs about 8.34 pounds per gallon. A few inches of standing water can easily add hundreds to thousands of pounds of force on the cover and the pool structure.
- Algae and Mosquito Breeding Grounds: Stagnant water is a perfect breeding ground for algae and mosquitoes. Algae can stain the pool cover and, if left unchecked, may spill into your pool water, complicating future maintenance.
- Material Degradation: Constant exposure to standing water can deteriorate the fabric of your pool cover, particularly if it’s made of mesh or is improperly installed.
- Hazard Risk: The combination of weight and slipping potential makes standing water a safety hazard, especially for children and pets near the pool area.
Tools and Materials Needed for Safe Water Removal
Before diving into the actual process, it’s essential to gather the right equipment. Working on a pool cover with standing water requires efficiency, balance, and safety. Here’s what you’ll need:
Essential Tools and Equipment:
| Item | Purpose |
|---|---|
| Submersible Pump | Designed specifically for pumping out standing water efficiently and safely. |
| Aquatic Leaf Blower or Wet Vacuum | Can be used for removing light water accumulation and debris from the cover. |
| Buckets or Siphon Hose | Useful for small or emergency situations. |
| Cover Pump | A smaller electric or battery-powered pump designed to sit on the pool cover permanently. |
| Pole with a Scoop or Skimmer Net | Good for pushing water off the sides or redistributing water to lower points. |
Always ensure that any electrical equipment is rated for outdoor use and handled with care to avoid shock or electrocution near water.
Step-by-Step Guide to Remove Standing Water from a Pool Cover
This section outlines a complete, tried-and-tested process to remove standing water effectively and safely.
Step 1: Assess the Extent of the Water Buildup
Before taking any action, get a general idea of how much water has accumulated. Extremely heavy water buildup can stress both the cover and the pool deck or coping. If standing water is accompanied by signs of bulging or distortion in the cover, address it immediately to reduce strain.
Step 2: Choose the Appropriate Water Removal Tool
Depending on the volume of water, you may use:
- A battery-powered or electric cover pump for routine water removal.
- A submersible pump for large water accumulation scenarios.
- A manual approach (using buckets, paddles, and siphon) for smaller, emergency cases.
Step 3: Pump the Water Off the Cover
If using a submersible pump:
- Place the pump into the deepest part of the water accumulation.
- Ensure the hose is connected and running water away from the pool area to avoid re-circulation.
- Turn the pump on and let it run until water recedes to a manageable level.
If using a cover pump:
- Place it onto the cover. These pumps usually sit in a protective cage to avoid direct contact with the cover surface.
- Plug it in or ensure it’s charged, and let it operate steadily without removing all the water at once—leaving 2–3 inches can help float the pump and prevent it from running dry.
Step 4: Manually Scoop or Redirect Remaining Water (Optional)
Use a pole with a scoop attachment or water wand to manually move smaller amounts of residual water into deeper areas where the pump can reach. This helps maintain efficiency and prevents the cover from sagging again.
If you’re using a siphon or buckets:
- Place the opening of the siphon hose in the deepest water pocket.
- Start siphoning via a pump or sucking motion, then lower the discharge end to a lower level than the suction point.
- Empty accumulated water into a bucket for transport or drainage. This method is slow but cost-effective for low water volumes.
Step 5: Redistribute Water for Balance
Once a majority of the water is removed, push any remaining pools toward the center or a designated drainage zone with a pole or broom. A pool cover should be kept relatively taut, but not tight enough to restrict natural movement.
Step 6: Check the Cover for Damage
After water removal, inspect the cover for signs of wear, holes, or stretch damage. Over time, repeated water pooling can weaken seams and stress the material. It’s a good idea to replace or repair covers that have reached their usable lifespan—typically around 6 to 8 years depending on quality and climate exposure.
Step 7: Secure the Cover Properly
To avoid repeated water buildup:
- Adjust the cover tension so that it remains level and secure, with no areas that slope downward.
- Ensure all anchors, tensioning straps, and water bags are correctly and evenly placed.
- Add a center support pole if necessary, especially for in-ground pools during winter, to maintain tension.
DIY Water Removal Techniques and Alternatives
Skimming and Redirecting
For those who don’t have a dedicated pump, a pole with a water scooping attachment or leaf blower can be effective. This method moves water from one part of the cover to another or guides it toward the pool cover’s edge, where it can be drained manually.
Some users have found solar covers to be useful in evaporation acceleration, especially when laid out in the sun. However, this technique is much slower and not advisable for large water volumes.
Using Water Tubes or Bounce Balls
Placing water tubes or large bounce balls (available at pool stores) on the surface can help break the surface tension of the standing water, making removal easier. These tools naturally move around the cover, redistributing the water and preventing pooling.
Creating a Sloped Cover Surface
For advanced DIYers, creating a slope or a central drainage point using temporary support poles and weighted mesh can help prevent future accumulation. However, ensure the modification doesn’t damage your existing cover system or void warranties.
Professional Solutions for Persistent Standing Water
Automatic Pool Cover Pumps
These are stand-alone pumps that sit on the pool cover and activate when sensors detect water. Modern automatic pumps can be battery-operated, solar-powered, or hard-wired into a power source and offer an efficient way to manage light to moderate water accumulation.
Professional Pool Cover Maintenance Services
If water accumulation is a recurring issue, consider enlisting a pool maintenance professional. They can:
- Inspect and realign your cover system for better water runoff.
- Install adjustable drainage points or reinforce support structures.
- Replace aging or damaged covers with newer models designed for water resistance and proper tension.
Consider Upgrading Your Pool Cover
If you’re frequently battling pooled water, you might be using the wrong type of cover:
| Cover Type | Water Management Feature | Best For |
|---|---|---|
| Solid Winter Cover | Not naturally draining | Heavy debris prevention; requires manual draining |
| Mesh Safety Cover | Allows water to pass through | Rain-prone areas; reduces standing water |
| Automatic Roll-Up Cover | Virtually eliminates water buildup when closed | Those desiring full functionality and aesthetics |
Each pool cover type has its advantages and limitations. For example, mesh covers can be safer and more water-friendly, but they might allow more debris into the pool. Knowing the right cover for your climate and usage needs can reduce your water removal workload significantly.
Preventing Standing Water from Accumulating
Proper Installation is Key
Many cases of standing water result from improper installation. Always ensure that:
- The cover is installed taut, with even tension across all sides.
- Center poles or supports are used in large in-ground pools to maintain top coverage without sagging.
- All cover clips, springs, straps, or anchors are correctly fastened and in good condition.
Maintenance Between Rainy Seasons
Prevention starts with regular maintenance. Before a rainy season or winter, take the time to:
- Remove any previous debris from the cover.
- Inspect the cover for tears, stains, or wear.
- Lubricate tension straps and connections to improve airflow and tension distribution.
Seasonal Adjustments
In areas that experience snow or heavy fall rains, consider using winter-specific pumps or installing temporary drainage channels made from weighted mesh or rope, which guide water toward central removal points.
Using a Cover Pump System Year-Round
Even during summer, leaves, wind, and occasional rainstorms can cause water pockets on a cover. A small cover pump can help maintain a dry surface throughout the swimming season and reduce the need for intensive cleanups.
Conclusion: Maintaining a Dry, Effective Pool Cover
Effective standing water removal from a pool cover isn’t limited to a one-time task. It’s part of a ongoing, seasonal responsibility that contributes to the health of your pool, the longevity of your cover, and the safety of your yard environment. Whether you’re dealing with post-rain sagging, recurring pooling, or preparing for the off-season, understanding the right techniques, tools, and preventive measures can help you enjoy a clean and safe pool space.
From choosing the right removal method to upgrading materials and maintaining installations, pool owners have options tailored to their usage, pool size, and climate. Remember: a dry pool cover helps ensure a clean swimming pool, reducing costly repairs and cleaning efforts as seasons change.
No matter how you tackle standing water, staying proactive and informed is your best defense. With the right tools and knowledge, your pool cover can weather any storm—literally.
Author’s Note
If you’re new to pool ownership or dealing with cover maintenance for the first time, don’t hesitate to consult a professional or refer to your cover manufacturer’s recommendations. Every pool system is unique, and the right preventative care today can save you from big headaches tomorrow.
Stay on top of your pool cover maintenance, and your investment will serve you reliably for years to come. For additional tips, product reviews, and seasonal guidance, continue exploring our pool care resources and make the most of your backyard oasis.
Why is it important to remove standing water from a pool cover?
Standing water on a pool cover can create several problems that affect both the cover and the pool beneath it. Excess water can add significant weight, putting stress on the cover material and potentially causing tears or collapse, especially if the cover is not designed to bear heavy loads. Furthermore, stagnant water can become a breeding ground for mosquitoes and algae, which compromise the cleanliness of the cover and surrounding area.
In addition, water left on the cover for extended periods can interfere with the chemical balance of the pool below. Rainwater or accumulated condensation may slowly seep through the cover, introducing unfiltered water that dilutes pool chemicals and introduces contaminants. This can lead to water clarity and sanitation issues once the pool is uncovered, increasing the time and cost of opening procedures.
What tools or equipment are needed to remove standing water from a pool cover?
To effectively remove standing water from a pool cover, you will need a few key tools. A submersible cover pump is the most efficient tool, as it is designed to remove water without disturbing the cover itself. It’s important to choose a pump that can handle debris and has an automatic shut-off feature to prevent it from running dry. Additionally, you may need a garden hose to rinse the cover after water removal and a long-handled leaf net or skimmer to remove any debris that has collected on the cover.
Optional tools include a siphon pump, which can work well for small amounts of water, and a cover saver or reel if you want to lift the cover off the water’s surface periodically. A broom or mop may also be useful for manually pushing water toward the center or edges of the cover where it can be more easily removed. Ensuring all tools are clean and in good working condition before beginning the process helps maintain safety and efficiency.
How can I manually remove standing water from a pool cover without a pump?
If you don’t have a submersible pump, you can still manually remove standing water with a few basic tools. One method involves using a siphon pump, which you can either purchase or sometimes improvise with a garden hose. Start by placing one end of the hose in the standing water and the other end at a lower discharge point. Once water begins flowing, gravity will continue to pull it through the hose. This is best for small to moderate amounts of water.
Another manual technique is using a broom or a flat mop to push water toward a lower point on the cover where it can be collected or drained off. Care must be taken not to tear the cover or allow too much water to spill into the pool below. For larger pools, a floating cover reel can help lift the pool cover partially above the water, allowing you to roll the standing water into one area where it can be more easily skimmed or pumped away.
What safety precautions should I take when removing standing water from a pool cover?
Safety is crucial when working around a pool cover, especially when standing water is involved. First, ensure that the area around the pool is dry and free of slip hazards. Standing water can make surfaces slick, so wearing non-slip shoes and working with a partner is recommended, especially on large pools. Also, avoid walking directly on the cover unless it’s specifically designed for that; it can stretch or tear, and you risk falling into the water below.
Another important precaution is ensuring that the power source for any equipment, such as a submersible pump, is protected from moisture to prevent electric shock. Use ground fault circuit interrupter (GFCI) outlets or battery-powered devices when possible. Also, if the cover is excessively weighed down or sagging, inspect it for damage before attempting water removal. In some cases, it may be safer to drain the pool slightly before addressing the water on the cover.
What should I do with the water removed from the pool cover?
The water removed from the surface of a pool cover is typically rainwater or condensation and is generally safe to discharge into areas away from the pool, such as landscaping, a drainage ditch, or a city storm drain if permitted. However, it’s important to ensure the discharge location does not cause water to pool around the pool deck, as this can create slippery surfaces or lead to water seeping into the pool equipment or foundation.
If the water contains debris, algae, or chemicals from the cover surface, consider filtering it before disposal. Some pool owners use a bucket or drain line with a mesh filter to catch large particles. Always check local regulations regarding water disposal, particularly if you are using a pump that may introduce contaminants into the municipal drainage system. Disposing of cover water responsibly helps protect the environment and maintain your property safely.
How often should I remove standing water from my pool cover?
It is best practice to remove standing water from a pool cover whenever it accumulates to more than a half-inch in depth. Frequent accumulation can put strain on the cover and add stress to the pool structure, especially in the case of solid safety covers. Waiting too long to remove water can also allow debris and contaminants to settle on the cover, which may eventually wash into the pool once the cover is lifted.
Depending on local weather patterns, this could mean removing water several times a season or even weekly during heavy rainfall periods. Automatic cover pumps that activate once water reaches a certain level are a helpful solution for pool owners who can’t monitor the cover frequently. Proactively maintaining a dry cover not only extends its lifespan but also makes pool reopening easier and more efficient.
Can standing water on a pool cover cause damage to the cover or the pool?
Yes, standing water can cause significant damage to both the pool cover and the pool itself. Excess weight can stretch or tear the cover material, especially if debris like leaves or twigs are trapped underneath and puncture the fabric. Safety covers anchored to the deck may also put increased strain on these fastenings, potentially pulling them loose or damaging the surrounding concrete.
Additionally, water sitting on the cover can seep into the pool below, increasing the volume of water and potentially overwhelming the skimmer or pump system. The influx of untreated water can alter the pool’s chemical balance and clarity, making opening the pool more labor-intensive. In extreme cases, standing water during freezing weather can lead to ice damage, warping covers and causing structural stress to the pool walls or coping. Regular maintenance and water removal help prevent these costly issues.