Draining an infinity pool might sound like a daunting task, especially if it’s your first time doing so. However, whether you’re preparing for a major repair, winterizing your pool, or remodeling the structure, knowing how to properly drain an infinity pool is essential to maintaining its longevity and aesthetic appeal.
Infinity pools, also known as vanishing edge or endless pools, are marvels of modern design, blending seamlessly with scenic backgrounds like ocean vistas or mountain ranges. Their unique structural characteristics, however, can complicate standard maintenance tasks—especially draining, which requires careful planning and execution to avoid damage or inefficiency.
In this comprehensive guide, we’ll walk through the entire process of draining an infinity pool, including necessary tools, safety considerations, and step-by-step instructions. This article is designed to be both informative and SEO-friendly, ensuring readers find value and practical insights when searching for how to drain an infinity pool.
Understanding the Basics of Infinity Pool Structure
Before diving into the steps for draining an infinity pool, it’s crucial to understand its structure and how it differs from traditional pools. Infinity pools rely on a unique circulation system that allows water to flow over a seamless edge (the infinity edge), creating the illusion of water disappearing into the horizon. This spillway water is collected in a catch basin or surge tank beneath the pool level before being recirculated via a pump system.
Key Components:
- Infinity Edge (spillway edge)
- Catch Basin or Surge Tank
- Main Pool Basin
- Recirculation Pumps
- Skimmers and Drain Lines
Understanding how these components interact is essential for safely and effectively draining the pool. The catch basin or surge tank will also need to be emptied, and proper water disposal is required to avoid damaging surrounding structures or landscaping.
Why You Might Need to Drain an Infinity Pool
Although infinity pools are built for long-term durability, there are several scenarios in which draining becomes necessary:
1. Renovations and Repairs
Damaged tiles, cracked fiberglass, or liner issues may require partial or full drainage. Structural repairs near the infinity edge, especially, often necessitate a completely dry environment to ensure long-lasting results.
2. Winterization
In colder climates, pools must be drained or winterized to prevent freezing-related damage. While some systems are designed to handle mild cold, full winterization typically requires draining the pool to a safe level to protect equipment and the structure.
3. Major Algae or Contamination
In extreme cases of algae infestation or contamination, draining can be a more effective option than chemical treatment. This is especially true if filter systems have been overwhelmed or the water chemistry has been rendered unstable.
4. Water Chemistry Correction
If your infinity pool has had prolonged imbalances in pH, alkalinity, or calcium hardness that conventional treatment can’t correct, partial or full drainage might be necessary.
The Dangers of Incorrect Drainage
Draining an infinity pool improperly can cause serious damage to its structural integrity, especially if the catch basin isn’t properly considered. Since water is heavy—approximately 8.34 pounds per gallon—removing the water creates pressure changes that can cause:
- Hydrostatic pressure fluctuations that may lead to cracking
- Compromised pool liners or surface coatings
- Damage to the circulation system and plumbing
- Environmental or regulatory violations if water is disposed of incorrectly
For these reasons, approaching the draining process with the right tools, safety precautions, and awareness of the unique engineering of infinity pools is essential.
Tools and Equipment Needed Before You Begin
Proper preparation is the foundation of a successful infinity pool drainage. Here’s a checklist of essential tools and supplies:
Drainage Equipment:
| Item | Purpose |
|---|---|
| Submersible Sump Pump | To drain the main pool basin and catch basin |
| Wet/Dry Vacuum | For vacuuming residual water and debris |
| Garden Hose | To carry water away from the pool area |
| Backflow Preventer | To avoid water from re-entering the pool during draining |
Safety and Protection:
- Rubber Gloves and Eye Protection
- Non-Slip Shoes
- Warning Signs (to alert others of work in progress)
Step-by-Step: How to Safely Drain an Infinity Pool
Now that we’ve identified the unique aspects of infinity pools, the tools needed, and the importance of careful planning, let’s walk through the process in detail.
Step 1: Turn Off All Electrical Systems Connected to the Pool
Before doing any work, switch off the power supply to your pool’s pumps, filtration system, and lighting circuit at the circuit breaker. This ensures your safety and the integrity of the equipment while you’re draining water levels that may drop below safe operating thresholds for these systems.
Step 2: Remove Ladders, Accessories, and Pool Features
Take out all ladders, diving boards, skimmer baskets, and other removable components. If the infinity pool has underwater lighting, it should also be disconnected and removed at this stage.
Step 3: Test and Prepare Drainage Area for Water Outflow
You need a safe place to discharge the water. Ensure that the drainage hose leads away from electrical equipment, homes, and neighboring properties. Never drain directly toward a neighbor’s yard or delicate landscaping, as excessive water flow can damage both their property and the surrounding ground.
Step 4: Drain the Main Pool Basin
Position your submersible pump in the deep end of the pool. Connect the garden hose for water outflow and secure it to a safe drainage area.
Turn the pump on and allow it to remove the bulk of the water. Most infinity pools should be drained to just below the skimmer line but above the main drain. Draining completely should only be done under professional supervision to avoid structural damage from hydrostatic pressure.
Step 5: Drain the Catch Basin or Surge Tank
Locate the catch basin or surge tank, which may be under the infinity edge or near a pool equipment room. Remove any cover or grate and insert a submersible pump. Drain the basin completely, as leftover water could eventually flow back into the main basin if not evacuated.
Step 6: Remove Remaining Water with a Wet/Dry Vacuum
After using pumps to remove larger volumes of water, a wet/dry vacuum is invaluable for extracting remaining moisture from sloped areas or corners. This ensures a dry surface for repairs or inspections.
Step 7: Clean and Inspect the Interior Surface
With the pool empty, it’s a good time to scrub tiles along the waterline and check for cracks, scaling, or surface damage. Use pool-specific cleaning agents and a soft brush to maintain long-term finish quality.
Tips for Safely Handling Water During Drainage
1. Check Local Regulations for Water Disposal
Some municipalities restrict water flow into public sewer systems or storm drains. Make sure to check local codes related to pool drainage and disposal to avoid fines or legal complications.
2. Avoid Overnight Draining
If possible, complete the drainage process in daylight hours. If you have to stop mid-way, consider partially refilling the pool to stabilize pressure until you resume work. Draining overnight can lead to unexpected flooding or hazards if something goes wrong during off-hours.
3. Use a Backflow Preventer
To stop water from returning to the main basin once drained, install a backflow preventer or place the hose at a lower elevation than the pool basin to ensure gravity-driven one-way water movement.
When to Call in a Professional
While homeowners with moderate DIY skills can manage partial draining with care, certain situations call for professional assistance:
1. Full Draining Required for Repairs
If your pool needs complete drainage for tile replacement, re-plastering, or structural fixes, a qualified pool technician should be consulted. They can assess hydrostatic pressure risks and ensure proper equipment installation.
2. Pump and Equipment Issues
If the surge tank pump isn’t functioning or shows signs of damage, attempting to manage the drainage yourself can lead to more problems. A certified technician can handle repairs safely and efficiently.
3. Environmental Concerns or Permits Required
In some regions, draining large volumes of treated water requires a permit or professional offsite water treatment. Professionals can assist you in navigating these requirements and disposing of pool water through sustainable methods.
Caring for Your Infinity Pool After Draining
Once drained, your pool will require maintenance even when empty. Here’s how to care for it:
1. Cover to Prevent Debris Accumulation
Use a secure pool cover or temporary barrier to protect the interior surface from weather, algae growth, or accidental debris entry.
2. Resume Circulation Gradually After Refilling
When it’s time to refill, ensure you start slowly and check for any leaks. Reconnect electrical systems only after confirming that the water level is sufficiently above the pump intake lines.
3. Test and Rebalance Water Chemistry
After refilling, run water tests and re-establish proper pH, alkalinity, and chlorine levels to ensure a safe swim environment.
Conclusion: Draining an Infinity Pool the Right Way
Draining an infinity pool doesn’t have to feel overwhelming. With a sound understanding of the pool’s unique structure, the right equipment, and a thoughtful approach to safety and legal considerations, you can successfully complete the task while protecting the investment you’ve made.
Whether you’re prepping for a full renovation, correcting chemical imbalances, or winterizing for the cold season, knowing how to drain your infinity pool correctly is part of effective long-term care. If in doubt, or if the task involves major structural modifications, don’t hesitate to call in a professional to ensure success and safety.
Now that you’ve completed this guide, you have all the knowledge needed to begin the draining process with confidence—so your infinity pool can continue to serve as the breathtaking centerpiece of your outdoor space for years to come.
Why is it important to properly drain an infinity pool?
Properly draining an infinity pool is essential for maintaining the structural integrity of the pool and ensuring the safety of the surrounding environment. Unlike traditional pools, infinity pools have a unique overflow system that requires careful handling to prevent water damage to the edge, catch basin, and filtration components. Draining the pool incorrectly can lead to hydrostatic pressure issues, which might cause the pool to crack or shift, especially in in-ground models.
Additionally, regular draining and cleaning helps maintain water quality and prolongs the life of the pool’s surface and equipment. Over time, chemicals, debris, and contaminants can accumulate in the water, leading to staining, scaling, or deterioration of the pool finish. By following the proper draining procedure, pool owners can ensure effective maintenance while avoiding unnecessary repair costs.
When should you consider draining your infinity pool?
You should consider draining your infinity pool when extensive cleaning, repairs, or resurfacing are required, or when water chemistry becomes severely unbalanced and cannot be corrected through normal means. Additionally, in regions with severe winter climates, partial or full draining may be necessary to prevent freezing and potential damage to plumbing and equipment. Regular seasonal maintenance also often involves lowering water levels for tile cleaning or equipment servicing.
However, frequent full draining is generally discouraged unless necessary, as it can expose the pool structure to risks such as shifting or cracking. Consult a professional if you are unsure whether draining is needed or if your local climate or pool design requires seasonal adjustments. Always ensure that groundwater levels are considered to prevent buoyancy-related damage during the draining process.
What equipment and tools are needed to drain an infinity pool?
Draining an infinity pool requires several essential tools and equipment, including a submersible pump (powerful enough for the job), garden hoses for water disposal, a screwdriver or wrench set for filter and equipment adjustments, and safety gear like gloves and goggles. Additionally, you may need a water test kit to assess chemical levels prior to draining and a wet vacuum for cleaning residual water or debris after draining.
It is important to choose the right pump for the volume of water in the pool to ensure efficiency and safety. A pump with a built-in automatic shut-off feature can help prevent overheating or damage once the pool is empty. Ensure all local ordinances are followed regarding water disposal, and take precautions to protect nearby landscaping or structures from erosion or damage caused by excessive draining water.
Can you drain an infinity pool using the main drainage system?
Infinity pools are typically equipped with a main drainage system at the bottom of the pool, which can be used for partial draining but often cannot fully empty the pool on its own. The skimmer and the overflow edge system are not designed for active draining but rather for surface water removal. For complete draining, especially during maintenance or repairs, a submersible pump placed inside the pool is usually necessary to remove water efficiently and safely.
If you choose to use the main drain, it’s important to monitor the system to ensure it functions properly and that no mechanical damage occurs. In some cases, the pump attached to the filtration system may assist in lowering the water level, but for full drainage or situations requiring rapid water removal, using a dedicated pump is more reliable. Always follow safety guidelines and shut off all electrical components before manually draining through the main system.
How do you prevent hydrostatic pressure issues when draining an infinity pool?
To prevent hydrostatic pressure issues when draining an infinity pool, it is important to check the groundwater level around the pool area before beginning the draining process. If the water table is high, groundwater pressure can push the pool structure upward, especially when it’s empty, leading to serious structural damage. In such cases, it may be necessary to delay draining or use a controlled method that reduces the risk of buoyancy forces.
Additionally, ensure that the hydrostatic relief valve in the pool is functioning correctly. Some pools have built-in valves to release pressure, but they can become clogged or fail over time. You may also install a temporary vent or consult a professional to monitor water pressure during the draining process. Never leave an empty pool unattended, especially in wet seasons or flood-prone areas, to avoid sudden pressure changes that may compromise the pool’s structure.
Can you reuse the water from the infinity pool after draining?
In many cases, the water from an infinity pool can be reused, provided it is not heavily chlorinated or contaminated. Reuse applications include landscape irrigation, cleaning outdoor surfaces, or filling decorative water features, though you must first check local regulations on water reuse and disposal. Chlorine and other pool chemicals can damage plants or grass, so it’s important to test the water for chemical content before using it on vegetation.
If you plan on reusing the pool water, it’s best to drain it gradually and collect the water during the initial stages when chlorine levels are lowest. Allowing the water to sit for a day or aerating it can help dissipate remaining chemicals. However, avoid using it on saltwater-sensitive plants or in bodies of water such as ponds or streams, which can be negatively impacted by pool chemicals.
What steps should I follow after draining the infinity pool?
After draining your infinity pool, begin by inspecting the pool surface for cracks, stains, or wear. Clean the walls and floor thoroughly using appropriate non-abrasive cleaners, and scrub away any algae or mineral deposits. If performing maintenance or repairs, this is also the time to service plumbing lines, replace worn gaskets, and check the pump and filtration system for any issues.
Once cleaning and repairs are complete, refill the pool slowly while monitoring the equipment and water levels. Reestablish chemical balance using a water test kit and gradually reintroduce sanitizers like chlorine or salt. Ensure that the infinity edge system is functioning correctly and that water flows into the catch basin as intended. Always turn on the filtration system once the pool is filled to optimal levels and allow water to circulate for proper sanitation.