Why Do I Have Green Pool Water?

Why Do I Have Green Pool Water?

Why Do I Have Green Pool Water?


Nothing beats the feeling of diving into a sparkling clean pool on a hot day. But the sight of green water can be a real downer, especially when you're counting on the pool to beat the heat. It's frustrating to see your lovely blue pool turn green within just a few days. And while there are a handful of reasons why this could happen, the good news is that it's possible to fix it. In this blog post, we'll take a closer look at what causes green pool water and what you can do to prevent it from happening in the future.


1. Algae Infestation

The most common cause of green pool water is an infestation of algae. Algae are microscopic plants that thrive in water, and if not treated, can quickly spread throughout your pool. Algae can be introduced into your pool in many ways, including contamination from swimming suits, wind-blown spores, and the addition of untreated water. If left unmanaged, algae can turn your pool into a slimy, green mess. The good news is that it's easy to treat with the right chemicals and regular pool maintenance.

2. Poor filtration and circulation

Your pool's filtration and circulation system play a critical role in keeping your pool clean and clear. If your filter is clogged or your pump is not running properly, it can cause the water to turn green due to poor circulation. Inadequate circulation allows bacteria and algae to grow and thrive in your pool, leading to an infestation. That's why it's crucial to stay on top of your pool maintenance schedule to ensure that your filtration system is working correctly.

3. Chemical Imbalance

The pH level, total alkalinity, and chlorine levels in your pool are all essential factors in maintaining healthy and balanced water. If any of these levels are off, it can cause your pool water to become cloudy, discolored, or green. High pH levels or low chlorine levels can allow algae to grow, leading to green water. That's why it's essential to test your pool water regularly and maintain a proper chemical balance.

4. High Levels of Metals

If your pool has high levels of iron or copper, it can lead to green, murky water. Metals can enter your pool from several sources, such as old pipes, source water, or even pool equipment. High metal levels can stain your pool surfaces and turn your water greenish-brown. The only way to correct this is by using a metal sequestering agent or draining your pool and replacing it with fresh water.

5. Lack of Maintenance

Lastly, green pool water can often be the result of a lack of proper maintenance. Regular pool care, including cleaning filters, skimming debris, brushing surfaces, and testing water chemistry, is essential to keep your pool clean and clear. Failing to stay on top of pool care and maintenance can lead to a buildup of algae and other harmful bacteria in the water.



There are several reasons why your pool water could turn green, but the good news is that most cases are curable with the right treatment. Proper pool maintenance is essential to keep your pool clean and clear, and with regular care and attention, you can enjoy hours of swimming in crystal clear water. At Pure and Simple Poolcare, we offer reliable and affordable pool services in Winter Park, FL, to help keep your pool in top shape all year round. Contact us today to schedule an appointment and take the first step towards a clearer, healthier pool.