Above-ground pools offer an affordable, flexible, and easily installed option for cooling off during hot summer days. However, while they may seem simple to maintain and operate, many pool owners unknowingly make critical mistakes that compromise safety, longevity, and enjoyment. Whether you’re a new pool owner or looking to improve your maintenance routine, knowing what not to do is just as important as knowing what to do.
In this article, we will explore the most common and potentially damaging mistakes people make with above-ground pools, including improper maintenance, poor winterization practices, misuse of chemicals, ignored safety guidelines, and more. If you want to keep your above-ground pool clean, efficient, and functional for years to come, read on to avoid these avoidable pitfalls.
Ignoring Regular Cleaning and Maintenance Routines
Some of the most costly mistakes involve neglecting regular cleaning and maintenance routines. While above-ground pools may not seem as complex as in-ground ones, they still require consistent care to operate efficiently.
Skipping Skimming and Netting
Do not skip daily or weekly skimming of debris from the surface of the water. Leaves, insects, pollen, and dirt can quickly accumulate on the surface, especially during spring and fall. While the filtration system removes smaller particles, a skimmer net prevents organic matter from sinking and decomposing, which can cloud the water or change the chemical balance.
Not Vacuuming the Pool Bottom
Ignoring vacuuming is a mistake that can lead to unsightly sludge buildup, algae growth, and even corrosion on the pool floor. Some believe that filter systems alone can handle bottom debris, but without manual or automatic vacuuming, fine particles settle for long periods, making water quality suffer.
Forgetting to Brush the Pool Walls
You may not realize it, but brushing the pool walls regularly helps prevent the buildup of algae and other contaminants. Skipping this practice increases long-term maintenance and cleaning effort.
Adding Too Much Chemicals
Chemical treatment is essential for preventing bacteria growth and algae formation, but incorrect use can harm both the equipment and the swimmers.
Over-Chlorinating the Water
One of the most critical mistakes is adding too much chlorine. While chlorine is vital for water sanitation, an imbalance can cause:
- Eye and skin irritation for bathers
- Damage to swimsuits and pool liners
- Corrosion of pool hardware such as ladders and rails
- Metal fixtures becoming stained or discolored
Always test the water before adding more chlorine. Maintain chlorine levels between 1 and 3 ppm (parts per million).
Misusing pH Balancers
The pH level of pool water should fall between 7.2 and 7.6. Going beyond this range can cause uncomfortable swimming conditions and damage equipment.
A very high pH promotes scaling on pool surfaces and reduces chlorine’s efficiency. On the other hand, a low pH makes water corrosive and irritating. Therefore, never guess chemical addition amounts — always test and follow the manufacturer’s instructions.
Missing Weekly Testing
Your pool water should be tested at least once a week for chlorine, pH, alkalinity, and calcium hardness. Skipping this crucial step leads to poor chemistry balance and eventual discomfort for users.
Making Poor Choices in Pool Location
When first setting up your above-ground pool, where you place it matters more than most people realize.
Building It on Uneven or Unstable Ground
Do not install the pool on uneven or poorly compacted soil. An unlevel base can cause stress on the pool walls, leading to leaks or even collapse. Prepare the area by leveling, removing roots and rocks, and placing pool-safe flooring like sand or foam padding.
Ignoring Tree Proximity and Shade Coverage
Although a shaded pool might seem like a desirable feature, too much shade from trees can cause many problems:
- Low evaporation may lead to chemical imbalance
- Excessive leaf and pollen fallout that overwhelms filtration systems
- Algae growth thrives in low-sunlight conditions
Avoid placing your pool where it remains perpetually shaded unless you’re prepared for the extra cleaning and chemical maintenance.
Establishing Near Power Lines or Gas Lines
Before installing your pool, always locate underground utilities. Installing near power lines or gas lines is unsafe and can be fatal. Call local utility services (such as the “Call Before You Dig” service in the U.S.) to detect buried hazards.
Underestimating Winterization and Cold Weather Damage
Many above-ground pool owners assume winterization is optional because the pool is temporary or “above ground,” but this assumption can be fatal to your pool structure.
Not Emptying the Pool Correctly
One of the most common winterization mistakes is leaving the water in the pool at its normal level. In freezing climates, water must be lowered below the return jets to prevent freeze damage and cracking during colder months.
Ignoring Equipment Protection
Pool equipment such as pumps, filter systems, and hoses should be thoroughly drained, cleaned, and stored in a dry place. If left outside, water or moisture trapped inside can freeze and break vital parts.
Forgetting to Use Winter Pool Covers
Even when not in use, your pool needs to be protected from leaves, debris, ice, and animals. Invest in a strong, properly fitted winter pool cover that securely keeps contaminants out and retains water balance over months of disuse.
Neglecting Pool Safety Measures
Above-ground pools may be considered “less dangerous” than in-ground ones, but improper safety measures have led to numerous injuries and drowning cases.
Not Installing Fencing or Barriers
Your above-ground pool should be surrounded by a safety fence to restrict unsupervised access. Many pools only have stairs or ladders, which can be easily climbed by pets or young children.
The U.S. Consumer Product Safety Commission recommends a four-sided fence with a self-closing, self-latching gate. Fences should be at least four feet high and difficult to climb.
Not Adding a Pool Cover for Winter Access Control
If your pool remains up during the off-season, it’s essential to keep it securely covered. A solid pool cover, unlike a mesh cover, keeps water and people out entirely and is a better protective device during cold months.
Forgetting About Drain Safety
Older pools might have outdated drain covers that pose serious entrapment risks. Ensure drain covers meet the latest safety standards, especially if your pool has a single main drain. Regular pool codes now require dual drains in most states to prevent suction entrapment.
Misusing Pool Liners and Inflatable Pool Practices
The pool liner is the backbone of an above-ground pool’s water holding power, yet it’s frequently mishandled.
Using Harsh Cleaning Tools
Stiff brushes or abrasive cleaners can scratch or puncture the vinyl liner of an above-ground pool. Use soft brushes or dedicated vinyl-safe scrubbing tools. Avoid metal brushes and harsh chemical abrasive cleaners that compromise liner integrity.
Walking or Stepping Inside Unsupportive Structures
Certain inflatable or soft-sided pools, like Intex frames, require careful entry and exit. Do not step directly on the sides or climb into the pool using the top rails, which can damage seams, cause collapse, or create bulges that cannot be easily repaired.
Allowing Sharp or Weighted Objects in the Water
Shoe soles, pets’ claws, and even pool cleaning tools can scrape the bottom lining. Keep high heels, heavy diving weights, and metal tools away from pool areas. For best practices:
- Bare feet or non-marking pool shoes only
- No diving
- Avoid dragging sharp or abrasive objects across the floor
Misplacing or Ignoring the Pump and Filter System
The pump and filtration system work tirelessly to keep your pool clean, but incorrect placement or maintenance can easily strain or damage it.
Placing the Pump on an Uneven Surface
Your pool’s pump and filter system should sit on a flat, even, and preferably elevated platform. Uneven surfaces may prevent proper water flow and increase wear and tear on the pump motor. Vibrations from unbalanced bases can also loosen hose connections.
Setting It Too Far from the Pool
Keep your pump within a reasonable distance (ideally within 35 feet). The farther it is, the harder it must work and the more likely the hoses will kink or strain, reducing efficiency and lifespan.
Using Incorrect Filter Size and Type
Choosing the wrong filter can burden your system, increase energy usage, and compromise water cleanliness. Ensure your filter matches your pool’s gallon capacity and uses the correct flow rate. Sand filters are typically better for larger pools, while cartridge filters are often ideal for smaller above-ground installations.
Overfilling or Underfilling the Pool
While filling your pool might seem like a basic task, incorrect water levels can impact your equipment’s performance.
Overfilling the Pool Beyond Return Level
The water level in an above-ground pool should ideally be around the middle of the skimmer opening. Water higher than that can interfere with proper skimming and filtration. Going above the recommended water level may cause strain on the pool wall seams and lead to collapse in some cases.
Filling the Pool Too Rapidly
If filled too quickly, especially on unstable or newly prepared ground, the pressure on the walls and base can compromise the structure’s balance. Using a garden hose is standard, but filling the pool gradually helps maintain structural integrity especially as the liner settles into shape.
Allowing Low Water Levels During Warmer Seasons
During the summer, evaporation increases, and pool water evaporates faster than you might think. If the water level drops too low, the skimmer may not function properly, causing the pump to run dry and become damaged.
Choosing the Wrong Size or Type of Pool
Many people jump into purchasing an above-ground pool without doing enough research, leading to mismatched expectations and poor satisfaction.
Buying a Pool Too Small for Intended Use
Do not sacrifice utility for cost-effectiveness. While compact pools seem budget-friendly, they can become crowded fast — especially if you expect guests or multiple children. Always buy according to both current and potential future needs.
Mixing and Matching Incompatible Parts
If you buy separate components (like a liner, filter, and frame from different brands), you risk compatibility issues that lead to water leaks, filter strain, and difficult assembly. Always buy sets or verify that all parts, including the skimmer and ladder, are designed to work together.
Ignoring Assembly Instructions
Each pool has specific assembly instructions. Taking shortcuts can lead to structural defects in a brand-new pool. From over-tightening bolts to improperly installed supports, not reading and following instructions can render your warranty void or, worse, make your pool unsafe.
Being Ignorant of Legal and HOA Requirements
Above-ground pools are often chosen because of their low-profile design, but depending on where you live, certain zoning or homeowner association (HOA) rules apply.
Failing to Check Local Codes
Some municipalities require a permit or inspection even for above-ground pools due to safety standards. Ignoring local regulations can lead to fines, insurance issues, or even pool removal orders. Always check with your local city code office before installation.
Not Being Prepared for Electrical Codes
Pumps and pool systems rely on electrical power. Be sure your outdoor outlet is properly grounded and meets local electrical codes. If you’re unsure, consult with an electrician familiar with pool equipment regulations.
Conclusion: Enjoy Your Pool Safely and Sustainably
Owning an above-ground pool can bring joy, relaxation, and fun for your entire family — but that doesn’t mean it’s carefree. Avoiding the mistakes discussed in this article will ensure your pool experience is as smooth and safe as possible. From balancing chemicals to winterization to protecting your liner and structure, understanding what not to do with your above-ground pool can be just as important as what to do.
By following best practices in maintenance, safety, and system care, you can extend your pool’s life, reduce repair costs, and keep your backyard oasis looking and functioning great year after year.
Can I place my above-ground pool on uneven ground?
Placing an above-ground pool on uneven ground is a serious mistake that can lead to structural damage, leaks, and potential safety hazards. Above-ground pools require a level, stable surface to ensure even distribution of water weight and pressure. An unlevel base can cause the pool walls to bow or the frame to warp, which may void the manufacturer’s warranty and shorten the pool’s lifespan.
To properly prepare for installation, the ground should be cleared of debris, large rocks, and sharp objects. A layer of sand or a specialized pool pad is often recommended to provide a smooth and cushioning base. If you’re unsure about the terrain, it may be wise to consult with a professional or invest in ground leveling services before setting up your pool.
Is it safe to leave my above-ground pool uncovered when not in use?
Leaving your above-ground pool uncovered when not in use can invite a host of problems, including debris accumulation, algae growth, and contamination from rainwater, animals, or insects. A proper pool cover helps maintain water quality, reduces evaporation, and keeps the pool safer, especially if children or pets are around. It also cuts down on maintenance time and chemical usage by protecting the water from environmental contaminants.
There are different types of covers, such as solid safety covers and mesh covers, each with its own advantages. Solid covers are best for winterizing, while mesh covers allow water to drain through and are suitable for summer use. Make sure your cover is securely fastened to prevent it from blowing away or sinking into the pool during storms or high winds.
Should I ignore the water chemistry if my pool seems clean?
Even if your above-ground pool appears clean and clear, neglecting water chemistry is a dangerous mistake. Clear water does not always mean it is safe or balanced. Improper pH, chlorine, or alkalinity levels can cause skin and eye irritation, corrosion of metal components, and damage to the pool liner. Regular testing and adjustment of water chemistry is critical to ensuring a safe and enjoyable swimming environment.
To maintain water quality, test the water at least twice a week using reliable test strips or a liquid test kit. Key factors to monitor include pH (ideally between 7.4 and 7.6), chlorine levels (1–3 ppm), and total alkalinity (80–120 ppm). Proper chemical balance prevents the growth of algae and bacteria while protecting pool equipment and surfaces from premature wear.
Can I use household cleaning products to clean my pool?
Using household cleaning products such as bleach, dish soap, or laundry detergent to clean your above-ground pool can harm both the water balance and the structural integrity of your pool. These products are not formulated for use in swimming pools and may introduce harmful chemicals that irritate skin and eyes, damage the liner, or disrupt water chemistry. Always use pool-specific cleaning agents and follow the manufacturer’s instructions carefully.
If you’re unsure which products to use, consult the pool manual or reach out to a reputable pool supply store. Proper cleaning includes regularly brushing the walls, vacuuming the floor, and cleaning the filter system. Stick to algaecides, sanitizers, and clarifiers designed for above-ground pools to keep your water safe and your equipment in good condition.
Is it okay to overfill my above-ground pool?
Overfilling your above-ground pool past the recommended water level can lead to structural strain, inefficient operation of pool equipment, and difficulty in maintaining proper water balance. Excessive water pressure on the pool walls can cause them to buckle or lean, especially in metal or resin-framed pools. Additionally, when the pool is too full, skimmers and filtration systems may not function correctly, reducing overall water circulation and cleanliness.
It’s important to follow the manufacturer’s instructions for optimal water levels. Generally, above-ground pools should be filled to about two-thirds to three-quarters of the wall height. This allows the skimmer to operate effectively and provides enough water volume without overtaxing the pool structure. Regularly check water levels, especially after heavy rain or backwashing your filter.
Can I store my above-ground pool during winter without winterizing it?
Failing to winterize your above-ground pool before storage can lead to serious damage from freezing temperatures, algae growth, and equipment corrosion. When water freezes, it expands, which can crack the pool walls, linings, and plumbing components. Winterizing your pool involves properly balancing the water chemistry, adding winterizing chemicals, lowering the water level, and covering the pool securely.
Begin by cleaning the pool thoroughly and scrubbing the interior surfaces. Add winter algaecide and shock treatments, then lower the water to the appropriate level as recommended by the manufacturer. Drain and store pumps, filters, and hoses in a dry location to prevent freezing. Use a strong winter cover to protect the pool from debris and moisture, ensuring it stays in good condition until the next swimming season.
Is it safe to place heavy objects on or around the pool edge?
Placing heavy objects such as furniture, potted plants, or equipment on or around the edge of your above-ground pool can compromise the integrity of the pool structure and pose a safety risk. The added weight and pressure can bend or damage the metal or polymer walls, potentially leading to leaks or collapse. It can also create tripping hazards and obstruct access to the pool.
To avoid structural damage, keep the immediate area around the pool clear of heavy items and ensure that decks or patios are properly installed with adequate clearance. If seating or storage is required nearby, use lightweight, weather-resistant furniture and place it on a stable, level surface a safe distance away. Always distribute weight evenly and avoid placing anything on the pool’s top rails, ledges, or covers.