Dealing with Green Pool Water? Here’s What You Need to Know

cleaning green pool water

Are you tired of looking out at your backyard and seeing a green pool? This is a common problem that many pool owners face, but it can be frustrating and overwhelming to deal with. Instead of avoiding the issue or hoping it will fix itself, read on to learn everything you need to know about green pool water and how to effectively address it.

What Causes Green Pool Water?

The one ingredient that turns water green is algae, but there are a number of factors that can contribute to its growth, so here’s some information on the main culprits:


Algae is a type of plant that grows in water and can quickly spread if not properly treated. It is often introduced to pools through rain, wind, or contaminated pool equipment. Algae blooms can occur within a matter of days and can be difficult to get rid of without proper treatment.

Pool Water pH Level

Maintaining the proper pH level in your pool is crucial for both swimmer comfort and chlorine effectiveness. A pH level that is too high or too low can create an environment suitable for algae growth, leading to green pool water.

Low Chlorine Levels

Chlorine is an important element in keeping your pool clean and clear. Not only does it kill bacteria and other contaminants, but it also prevents algae from growing. If the chlorine levels in your pool are too low, algae can quickly take over and turn your pool into a green mess.

Poor Water Circulation

Proper water circulation is essential for keeping your pool water clean and clear. Without it, debris and contaminants can settle at the bottom of the pool, creating the perfect environment for algae to grow. This is especially common in pools with low or broken circulation systems.

Filter Not Working Properly

Your pool’s filter is responsible for removing debris, bacteria, and other particles from the water. If your filter is not working properly or is clogged with debris, it can’t effectively remove contaminants from the water, which can lead to algae growth. It is essential to regularly check and maintain your pool’s filter to prevent this issue.

The Impact of Green Water on Pool Health

Aside from being unsightly, green pool water can also have a significant impact on the health of your pool. Algae blooms can clog filters, reducing their effectiveness and potentially leading to costly repairs.

Additionally, algae can make it difficult to maintain proper chemical levels and balance in your pool, making swimming unsafe for you and your family. Some types of algae can also harbor bacteria that can cause skin irritation, respiratory problems, and other health issues.

Is the Water Cloudy and Green or Just Green? 

It is essential to determine if your pool water is just green or if it is also cloudy. If it is only green, it likely means that algae has taken over. However, if the water is both green and cloudy, it could be an indicator of a more severe issue such as high levels of bacteria or other contaminants. In this case, it is best to seek professional help.

How to Fix Your Green Water Problem

The good news is that green pool water can be fixed. Here are some steps you can take to effectively treat your green pool and get it back to its crystal-clear state.

Chemical Treatments

Chemical treatments can be effective in killing off algae blooms. However, it is essential to carefully follow the instructions and use the recommended amount to avoid further imbalances in your pool water.

Manual Cleaning

In addition to chemical treatments, manual cleaning is crucial for removing algae from your pool. Use a brush and vacuum to thoroughly clean the walls and floor of your pool, paying extra attention to areas with visible algae growth. It may also be helpful to drain and refill your pool if necessary.

Proper Conditioner Levels

Maintaining the correct conditioner level is often overlooked. If the level is too low, your chlorine will be burned off by the sun’s harmful rays. Conversely, excessively high levels can lead to “chemical lock,” requiring 2 or even 3 times the usual amount of chemicals (such as acid and chlorine) to maintain balance. Keep your conditioner levels in check to ensure a happy pool and prevent excessive spending on chemicals.

Preventing Green Pool Water in the Future

The best way to deal with green pool water is to prevent it from happening in the first place. Here are some tips for keeping your pool clean and clear all season long:

  • Regularly check and maintain proper pH, Alkaline, Conditioner, and chlorine levels.
  • Keep up with routine pool maintenance, including brushing, vacuuming, and cleaning the filter.
  • Keep pool equipment clean and free of debris to prevent contamination.
  • Invest in quality pool materials that are resistant to algae.

Invest in a Quality Pool with Taylor Made Pools

By understanding the causes of green water and taking proactive steps to prevent it in the future, you can keep your pool clean and clear all year long. And if you’re just starting out on your pool journey, we want to help!

At Taylor Made Pools, we build pools designed to fulfill all your backyard dreams, prioritizing quality materials that will help keep your pool healthy and beautiful for years to come. Contact us today to learn more and get started on building your dream pool!