Can You Swim in a Pool with Algae? How Safe is It?

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While algae in and of itself is unlikely to cause disease, if algae is growing in a pool, it’s a safe bet that something bad is present! Chlorine is the deciding factor. Any harmful bacteria will be killed if the chlorine level is high enough. However, a green pool is frequently synonymous with a pool devoid of chlorine. Simply refrain from doing so.

Generally, pool water turns green for one of three reasons. There are algae and insufficient chlorine; there is too much copper, or the water has become discolored due to pollen falling from nearby trees.

If pollen is the culprit, you will notice it moving when you swirl your hand through the water. If it is algae, it blooms, grows, and adheres to the pool’s sides and bottom.

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You will not perish if you swim in algae- or copper-laden water. However, when you emerge, your skin will most likely itch as if you had rolled in fiberglass. Make a favor to yourself and have the water tested; treat it, and then enjoy a nice dunk!

Additionally, if the pool water has turned green due to copper, you will notice a green tint to your fingernails, bathing suits, and hair. A thorough shower with soap and water will remove the green tint.

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ALSO SEE: Fire Extinguisher for Pool Chemicals – Which & Where to Buy

Can You Swim in a Pool with Algae

How Algae Affects Swimmers

Is it possible to swim in an algae-filled pool? In a nutshell, yes. However, is it safe to swim in an algae-filled pool? It is not recommended, whether mild or severe.

Significant amounts of pool algae provide an ideal environment for the growth of harmful bacteria that feed on algae.

These bacteria pose a health risk to swimmers, most frequently manifesting as a rash on the skin.

Additionally, it can result in a variety of bacterial infections of the ears or eyes. If contaminated pool water is accidentally consumed, it can also result in other health problems, such as a fever or diarrhea.

Thus, swimming pool algae must be taken seriously in order to maintain sanitary pool water and avoid potential health risks.

How Algae Affects Pools

Is pool algae a threat to the health of your pool? When the water in your above-ground pool is green with black, red, or mustard yellow algae spots, it can cause serious problems for your pool.

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Excessive swimming pool algae can clog your sanitation systems, rendering them ineffective. Swimming pool algae can permanently stain the structure of your pool and even cause the equipment to deteriorate.

Once algae has taken over your swimming pool, chemical shocks and chlorine treatments become ineffective, as resistant algae develop in extreme cases.

Determine the type of algae you are dealing with if you notice signs of swimming pool algae.

After that, take the necessary steps to eradicate it.

Once the algae is eradicated, take preventative measures to avoid future algae growth in the swimming pool.

Common Algae Found in Swimming Pools

The four most common types of swimming pool algae are listed below.

In a swimming pool, black mold is a collection of microscopic algae that causes visible black spots on the structure of the pool. It’s difficult to remove black mold from a swimming pool.

Though it begins slowly, black mold can quickly spread and potentially damage the structure of your pool if left untreated. In a swimming pool, black mold establishes deep roots into the surface it has colonized and thrives in the bottom and deep ends of pools.

Green algae are the most prevalent type of swimming pool algae. If the water in your above ground pool is green with a slimy texture, it is a sure sign that you have green algae in your pool. Unbalanced chemicals in a swimming pool will allow green algae to grow on the pool’s walls or on the surface of the water.

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Mustard algae in a swimming pool are frequently confused with pollen or dirt on the pool’s floors and walls. Because mustard algae is primarily caused by external factors, it can be difficult to treat in a swimming pool due to its resistance to chlorine.

Without treatment, mustard algae in a swimming pool can cloud the water and create an environment conducive to the growth of harmful bacteria.

A swimming pool with red algae can be an unsettling sight. Red algae is a type of bacteria that enters a swimming pool via swimmers, wind, rain, and pool accessories.

When red algae is left untreated in a swimming pool, it will eventually take over the entire pool and become a health hazard.

To learn more about swimming pool algae, including how to eradicate it and prevent recurrences, read our comprehensive guide to swimming pool algae.

Additionally, try Pool Marvel Water Treatment to boost the effectiveness of your pool’s chemical treatments and help prevent future algae growth.

Author: Howard S. Baldwin

My name is Howard S. Baldwin. I am a work-at-home dad to three lovely girls, Jane + Hannah + Beauty. I have been blogging for the last 3 years. I worked for other Home and Lifetsyle blogs, did hundreds of product reviews and buyers’ guides. Prior to that, I was a staff accountant at a big accounting firm. Needless to say, researching and numbers are my passion. My goal is to be an informative source for any topic that relates to DIY life and homemaking.

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