Talk to an expert & fix your pool leaks!

    (305) 484 4784

Talk to an expert & fix your pool leaks!

Why Is My Pool Water Green or Cloudy?

July 22, 2025
by Carlos Peña

If you’ve looked out at your pool one day and noticed the water has turned green or cloudy, you’re not alone. This is one of the most common issues pool owners face, especially during peak season. The good news? It’s fixable—if you act quickly.

Let’s break down why your pool water might be green or cloudy, the most frequent causes, and what you can do to get it crystal clear again without too much hassle.

Algae – The Most Common Cause of Green Pool Water

When chlorine levels drop or pH becomes unbalanced, algae can begin to grow fast, turning your water green in no time.

What to do:

  • Brush the pool walls and floor

  • Perform a chlorine shock treatment

  • Run the filtration system continuously for at least 24 hours

Chemical Imbalance – A Key Reason for Cloudy Pool Water

Even if you don’t see algae, incorrect levels of chlorine, pH, or alkalinity can make the water appear cloudy or milky.

What to do:

  • Test your pool water thoroughly

  • Adjust levels based on the results

  • Avoid mixing chemicals without proper guidance

Dirty or Damaged Filter – Another Cause of Cloudy Pool Water

If your filtration system isn’t working properly, it won’t remove fine debris or particles, leading to cloudy water.

What to do:

  • Check the filter and perform a backwash

  • Clean or replace the filter media if needed

  • Stick to a consistent daily filtration schedule

Hidden Leaks – A Silent Reason Behind Green or Cloudy Pool Water

Losing treated water regularly throws off the chemical balance, which can result in both algae growth and cloudiness.

What to do:

  • Try the bucket test to confirm water loss

  • If a leak is detected, call a professional for inspection and repair

When your pool water turns green or cloudy, it’s a sign something isn’t working properly. Whether it’s algae, chemical imbalance, filtration issues, or an unnoticed leak, acting quickly is key. A professional inspection can bring your pool back to the clear, inviting water you’re used to—and prevent bigger problems down the road.

0 Comments

Submit a Comment

Your email address will not be published. Required fields are marked *


The reCAPTCHA verification period has expired. Please reload the page.