Swimming Pool Blog - Tips, Care, and Installation

How to Drain an Above Ground Pool: Step-by-Step Guide

Written by Team Royal | 4/29/25 4:45 PM

How To Drain an Above-Ground Pool Safely and Effectively

Draining an above-ground pool is an essential part of pool maintenance that can ensure the longevity of your pool and the safety of those who use it. There are several reasons why you might need to drain your pool. Over time, the water in your pool can become chemically imbalanced, making it difficult to maintain proper water quality. Draining the pool allows for a fresh start, eliminating built-up contaminants and ensuring a healthier swimming environment. Additionally, you may need to drain your pool for significant repairs or to prepare it for the winter season. Whatever the reason, knowing how to properly drain your pool can prevent damage to the pool's structure and avoid potential safety hazards.

Table of Contents
When Should You Drain Your Above Ground Pool?
Best Ways To Drain an Above-Ground Pool
Draining an Above-Ground Pool: Step-by-Step Guide
Safety Tips for Draining an Above-Ground Pool
Frequently Asked Questions

Discover How to Get Your Swimming Pool Ready for Summer.

 

When Should You Drain Your Above Ground Pool?

  • End of the Swimming Season: Draining your pool at the end of the season can help you prepare it for winter. This is especially important in colder climates where freezing temperatures can cause damage to the pool if water is left inside.

  • Before Heavy Cleaning or Repairs: If your pool requires deep cleaning, or if you're planning to make repairs, draining the pool is often necessary to access the pool walls, liner, and floor.

  • When Water Treatment Becomes Ineffective: If you’ve tried balancing the water chemistry and it remains off, or if the water is murky and doesn't clear up, it might be time to drain and refill your pool to restore water quality.

  • To Replace Old Water: Pool water should be refreshed at least every 3-5 years. Draining and refilling your pool helps remove dissolved solids that accumulate over time and can affect water clarity and chemical balance.

 

Best Ways To Drain an Above-Ground Pool

Tools Needed Description
Submersible Pump Efficiently removes large volumes of water.
Garden Hose A simple, cost-effective way to siphon water from the pool.
Utility Pump (Optional) Provides an additional method for faster draining.
  1. Submersible Pump: A submersible pump is the most efficient tool for draining an above-ground pool. It works by being placed in the deepest part of the pool, where it pumps water out through a hose. This method is fast and effective, making it ideal for large pools or when you need to drain the pool quickly.
  2. Garden Hose Siphon: The garden hose siphon method is a simple and inexpensive option, though it is slower than using a pump. You fill the hose with water, submerge one end in the pool, and place the other end at a lower elevation outside the pool. Gravity does the rest, drawing the water out. This method works best for smaller pools or when time isn’t a factor.
  3. Utility Pump (Optional): If you have access to a utility pump, it can be used in conjunction with a submersible pump or on its own for faster draining. This is particularly useful if you're dealing with a large pool and want to expedite the process.

 

Draining an Above-Ground Pool: Step-by-Step Guide

  1. Turn Off the Pool’s Pump and Filtration System: Before you start draining, ensure that all electrical components, such as the pool’s pump and filtration system, are turned off. This prevents damage to the equipment and ensures your safety.

  2. Connect the Submersible Pump (If Using One): Place the submersible pump in the deepest part of the pool. Attach a hose to the pump and direct the other end to your chosen drainage area. Ensure the hose is secure and positioned in a location where it can safely handle the water volume.

  3. Begin Draining the Pool: Turn on the submersible pump to start the draining process. If you're using a garden hose, submerge one end in the pool and place the other end at a lower elevation to start the siphoning process.

  4. Monitor the Water Level: Keep a close eye on the water level as it drains. This is crucial to avoid over-draining, which can damage the pool liner or structure. Stop the pump or remove the hose when the water level is just above the pool floor.

  5. Remove the Remaining Water: There will likely be some water left at the bottom of the pool. Use a wet/dry vacuum or mop to remove the remaining water to avoid any damage to the pool liner.

  6. Inspect the Pool for Damage: Once the pool is drained, inspect the liner and walls for any signs of wear and tear. This is an excellent time to make any necessary repairs before refilling the pool.

  7. Properly Dispose of Water: Ensure that the drained water is disposed of according to local regulations. Some areas may have restrictions on where and how you can release large volumes of pool water.

 

Safety Tips for Draining an Above-Ground Pool

Draining your above-ground pool involves several safety precautions to protect the pool structure and ensure environmental compliance. Here’s how to navigate this process safely:

  • Check Local Water Disposal Regulations: Research local laws and guidelines regarding pool water disposal. Some areas have strict rules on where and how pool water can be discharged due to environmental concerns. Ensure the water is neutralized of chemicals like chlorine to prevent contamination.

  • Ensure Electrical Safety: Turn off all electrical equipment, including the pool’s pump and filtration systems, before starting the draining process. Use only heavy-duty, outdoor-rated extension cords if needed, and never leave the sump pump unattended while it is running.

  • Monitor the Draining Process: Regularly check the water level as it drains to avoid over-draining, which can lead to structural damage. An empty pool can suffer from issues like wall collapse or liner shrinkage due to the loss of water pressure that normally supports the pool's structure. Draining gradually helps mitigate these risks by allowing early detection of any issues.

  • Avoid Over-Draining: Leave a small amount of water in the pool to maintain some pressure against the liner and walls, which helps prevent the liner from drying out and shrinking. Use a shop vac or similar equipment for the last few inches of water, if necessary.

  • Structural Inspection Before and After Draining: Inspect the pool for any signs of wear or structural weaknesses before draining. The weight of the water stabilizes the pool structure, so removing it can reveal or exacerbate any existing issues. Another inspection post-draining helps identify any damage that needs repair before refilling.

  • Environmental Considerations: Direct the draining water away from the pool and other structures to prevent erosion or water damage. Avoid draining water into areas that could lead to flooding or negatively impact your garden or landscaping. It’s advisable to drain the water at least 20-30 meters away from the pool, especially in areas with a high water table.

  • Temperature and Weather Conditions: Choose a day with mild, dry weather to drain your pool. High temperatures can cause the liner to become brittle if exposed for too long, while cold or wet conditions can increase the risk of hydrostatic pressure-related issues.

 

How To Drain an Above Ground Pool - Frequently Asked Questions

  • Is it necessary to drain my above ground pool every season?

    No, it’s not necessary to drain your pool every season. However, if you’re closing it for winter or if the water quality has significantly deteriorated, draining might be required.

  • How long does it generally take to drain a large above ground pool?

    The time it takes can vary depending on the method used. With a submersible pump, it could take anywhere from 8 to 14 hours. Using a garden hose siphon can take significantly longer, sometimes up to 24 hours or more.

  • Can I drain the pool water into my yard?

    While it is possible, it's important to consider your yard's ability to absorb that much water without causing damage. Check local regulations, as some areas have restrictions on where pool water can be drained.

  • What should I do if my pump stops working during draining?

    If your pump stops working, you can either try to troubleshoot the issue or switch to using a garden hose siphon method to continue draining the pool. Make sure to address any electrical issues with the pump before using it again.

  • How do I store my pump after use?

    After draining your pool, clean and dry your pump thoroughly. Store it in a cool, dry place away from direct sunlight to ensure it remains in good working condition for future use.