Indications to Proceed with Changing Pool Water

Image of a pool

Do you have a pool in the backyard of your lovely home? Do you like having a pool in your residence but hate to maintain it? You are not alone! Almost for all homeowners maintenance of a pool is a challenge. The most important question is to understand when changing pool water becomes a necessity.

And once you know to get the right answer, you might get anxious about the risks of following the procedure. If you have ever come across any of these problems, you are at the right place. We want to help our readers in choosing only reliable pool services. Here is a brief guide for you.

There is a possibility that you might be neglecting the pool during winters. But when spring arrives, it becomes crucial to prepare the pool for summer. Swimming is not only one of the best ways to beat the heat but it also allows you to have recreational time with your family. Luckily, spring is the best time to change the pool water. But firstly you will have to analyze the condition of the pool and then you may proceed with changing pool water. 

When to Change Pool Water?

For most of the pools, the water gets changed rarely. That’s because the process of changing the pool water is long, tiring, and above all, quite risky. Improper draining can lead to damages caused by sun exposure. If levels of groundwater are not carefully assessed, the pool can heave out of the ground. You can either back up the sewer system or burn out the filter pump. 

There are a few reasons for which you might need to change the pool water:

  • Pool Repair
  • Repainting or Refinishing
  • Maintain Pool Hygiene and Level of Total Dissolved Solids

For those who don’t know, total dissolved solids more commonly known as TDS are substances that are accumulated in pool water. Over time, the water evaporates and the level of these substances keeps on increasing. Ultimately, unhealthy levels of TDS can destabilize the normal and ideal composition of water which in turn becomes harmful for the swimmers and also becomes unsuitable for the pool structure.

This typically means you need to keep adding more chemicals to keep water in its ideal state. Eventually, you will have no other option left except to drain the water and replace it with clean and fresh water.

The frequency of changing pool water varies and depends on certain factors. Some of the factors are as follows: 

  • Water Hardness
  • Pool Maintenance
  • Climate
  • Number of Swimmers

Generally, most in-ground pools need to be drained after a time span of five to seven years. But if the number of daily swimmers and total dissolved solids in pool water is very high, you may need to do the procedure after every three to four years. If you are wondering how the number of daily swimmers can affect the frequency, know that splashing and carrying water with your body are among the top ways of taking water out of the pool. 

If you partially drain the pool every winter, this dilutes the TDS levels and hence you can change the entire pool water after 7-8 years.

Why Change Pool Water Periodically?

Whether you own a pool or are in charge of maintaining a pool, you must know the importance of keeping TDS levels within the correct ranges. Dealing with the TDS is the single most important reason for changing pool water periodically. When these levels start to rise, they interfere with the action of other chemicals, such as chlorine. This makes it impossible to keep the water clear. If you keep on increasing the amount of added chemicals, they can irritate the skin of swimmers as well as it may also damage the pool.

How To Change Pool Water? 

Once you know the TDS levels are unsafe or you need to carry on certain types of pool repair work, here is how to change pool water.

  • Consider the groundwater levels. If the water levels are too high or it has been raining heavily for several days, draining pool water can actually cause it to pop out of the ground. If you have fiberglass and vinyl liner pools, you must consult us or any other trusted pool company for draining them. These pools are not built to be drained completely so a professional can help you drain them strategically.
  • The best time of the year is when the weather is mild. If the temperature will be over 85 degrees at any point in the process, postpone draining. The same holds for temperatures near or below freezing. All of these factors make spring the best time of the year. Temperatures are also mild during fall but we do not recommend keeping a pool empty during the winter season.
  • Rent a submersible pump from pool supply companies or hardware stores. It is the safest equipment to change pool water. Connect it to the sewer outlet on your property.
  • As the residential sewer lines are not built to deal with huge quantities of water all at once, it's best to keep the outflow to approximately 12 gallons per minute or less. The complete process can take a few days at a minimum.
  • After the water is completely drained by pool owners, either refill it with clean and fresh water or carry on with the repair work.


If you want to avoid making any mistakes with your expensive pool, it's best to get in touch with professional service providers. They are fully equipped to help pool owners with proper and safe procedures for changing the pool water. For getting services of well-equipped and well-experienced contractors you can easily find them on a free business directory such as Topspot 101.