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kid playing with water in pool
Dec 17, 20251 min read

I have green pool water, what now?

Discolored pool water

It can be frustrating when your pool water suddenly turns green. This often happens after a heavy thunderstorm, but don’t worry. With the right tips, you can prevent it or fix it quickly!

 

Check your pool after a storm

When your pool turns green after a storm, it’s usually caused by a chemical reaction involving chlorine. As soon as the storm passes, it’s a good idea to check the chlorine level in your pool. If the chlorine is too low, adding more can help prevent the water from turning green. Also make sure to keep the pool clean by regularly removing leaves, bugs, and other debris.

 

Maintain proper water balance

Keeping the water properly balanced is essential to stop algae from growing. Algae thrive in sunlight. While your filter pump can remove many particles, some are so small they pass through. That’s why it’s important to use enough chlorine to stop algae from spreading. Green water may not look appealing, but the good news is that it’s not harmful. You can still swim safely while you work on clearing it up!

 

child laying on surfboard in pool

Check your pool

Green pool water after a heavy thunderstorm is usually caused by a chemical reaction with the chlorine in your pool. As soon as the storm passes, it’s best to check the chlorine level right away. If it’s too low, add more chlorine to prevent the water from turning green. Also keep your pool clean by regularly removing leaves, bugs, and other debris.

Check the pools
child in pool

Maintain water balance

Maintaining proper water balance is essential to prevent algae from growing in your pool. Algae thrive in sunlight. While your filter pump can remove algae, some particles are so small they may not be caught by the filter. That’s why it’s important to use enough chlorine to keep algae from spreading. Even though green water might not look appealing, it’s not harmful to your health and you can still swim safely.

Pool pumps