Now, let’s be honest. No one. And we mean no one. Likes to swim or look at a green above ground pool (or any pool for that matter). It is just plain ugly. However, don’t worry it happens to most of us.

So we have established it is the proverbial sight for sore eyes. But a far bigger and better question would be, is a green above ground pool actually safe to swim in?

In general, you should avoid swimming in a green above ground pool. The main reason pool water turns green is due to a buildup of algae and bacteria, which can be harmful to swimmers either through skin infection or due to ingesting the bacteria. In severe cases, algae can cause serious illness or even death, although this is rare with suburban pools and water.

So, to conclude a green above ground pool looks ugly and might not be the safest to swim in, however, let’s elaborate on this further.

Is it Safe to Swim in a Green Above Ground Pool?

Swimming in green pools is safe in nature because the water contains an ecosystem complete with predators that keep bacteria and toxins at bay. Unfortunately, when pool maintenance falls behind algae becomes a superfood for more microbes than just humans. These microbes can enter through the nasal passages, eyes, ears, mouth, or even tiny cuts allowing it to become less safe to

Pollen from nearby plants can cause a green color in the pool, so it’s important to make sure there aren’t any allergies. If you have no issues with pollen then you should be able to swim in your pool without any problems.

Also, it is less of a risk with above-ground pools, but algae is slippery and can cause other types of injuries.

What causes an Above Ground Pool to Turn Green?

Many factors are responsible for turning your pool water from the clear blue state to a green shade. If the new green color is pale, it might be due to small algae formation in response to inadequate cleaning chemicals such as chlorine or bromine etc.. However, if the new color is deep green, that might mean a larger algal growth.

Pollen from nearby plants can cause a green color in the pool, so it’s important to make sure there aren’t any allergies. If you have no issues with pollen then you should be able to swim in your pool without any problems.

That said; the absolute NUMBER ONE reason why your above ground pool turns green is;

Not swimming in it. The moment your pool water is stationary for whatever reason there will form a build up of algae and bacteria, turning your water green. So even in the winter months try to get some regular movement in your pool to prevent this.

More reasons why your above ground pool can turn green

What to do if your Above Ground Pool turns Green?

If a pool has already developed an algae infestation, then it is necessary to do more than just pour some bleach into the pool. It’s time for a total clean.

Vacuum to Waste

To remove the algae and other debris, the filter setting needs to be set to “Waste”. Since it’s unsanitary for this junk to get back into pool water, always clean the vacuum filter after use.

Brush the Pool

Special algae brushes are available. Though it’s stronger, you should use a stiffer brush instead of a soft one so that the entire layer gets removed.

Yes, brush the pool floor after you vacuum or clean it to ensure that algae remain in the water.

Test Chemistry

To know which way to adjust the chemicals, get a starting point.

This can be done as the first step if that is easier for you.

Shock the Pool

Pool Shock contains concentrated chlorine and must be used to kill algae. Regardless of the type of shock originally present, chlorine should be used instead.

At the time of writing this article these were great above ground pool maintenance products available on Amazon.

PS: we provide some awesome tips in this article as to prevent to how to prevent your above ground pool to turn gree

Awesome method on how to prevent your pool from turning green.

To recap….

We asked the question if it is safe to swim in a green above ground pool. As mentioned is not necessarily unsafe, however, since there is a threat of illness and infection, it is better to avoid swimming in one.

The main reason why an above ground pool (or any pool) would turn green is due to the water not moving and can be treated with chemicals.