The Signs You Need to Drain Your Pool and What to Do About Them

When it comes to owning a swimming pool, there are certain tasks that need to be done to keep it in good condition. One such task is draining the pool. However, knowing when to drain a pool can be a bit confusing. In this article, we’ll explore the factors that can help you determine when it’s time to drain your pool.

High Total Dissolved Solids (TDS)

One of the most common reasons to drain a pool is when the TDS level is too high. TDS refers to all the dissolved materials in the water, including salts, minerals, and metals. Over time, TDS levels can increase due to evaporation, adding chemicals, and other factors. When TDS levels get too high, the water can become cloudy and difficult to balance. Draining the pool and refilling it with fresh water can help reset the TDS levels and make it easier to maintain balanced water chemistry.

Green algae in an abandoned pool

Algae Growth

If you notice algae growing in your pool, it’s time to take action. While there are chemical treatments that can help get rid of algae, severe cases may require draining and refilling the pool. This is because algae can leave behind spores that can remain in the water even after treatment. Draining the pool and starting fresh can help ensure that all the spores are removed and prevent future algae growth.

Structural Damage

If your pool has experienced structural damage, such as a cracked or broken liner, draining the pool may be necessary to make repairs. This will give you a chance to inspect the damage and make any necessary repairs before refilling the pool with fresh water. Read more about pool renovation and transforming.

A small facility with a winerized pool


In colder climates, it’s important to properly winterize your pool to prevent damage from freezing temperatures. Draining the pool to the appropriate level and adding antifreeze can help protect the pool and its equipment during the winter months.

Water Conservation

While not a common reason, some people may choose to drain their pool to conserve water during times of drought or water shortages. While this can be a difficult decision, it can help ensure that there is enough water for essential needs.

In conclusion, there are several reasons why you may need to drain your pool. Whether it’s due to high TDS levels, algae growth, structural damage, winterizing, or water conservation, it’s important to take the necessary steps to keep your pool in good condition. By knowing when to drain your pool, you can help ensure that it stays safe, clean, and enjoyable for years to come.