How to Get Rid of Worms in Your Pool (5 Effective Methods)

There is hardly a feeling as disgusting as jumping into your pool and stepping on a slimy dead worm. Getting rid of the worms in the pool is difficult, but simple tips can help get rid of the critters.

A pool cover can be used to prevent worms from falling into the pool. If worms end up in the pool, they are removed via the floor drain or with a pool net. A pool robot or a cordless vacuum cleaner can make getting rid of the worms easier.

Pool worms are a well-known problem among pool owners, and there is no simple solution to fighting a worm invasion. But with a few resources, you can drastically reduce the occurrence in the tank and maybe even stop it completely.

1. Use a solar pool cover against worms in the pool

Fishing dead earthworms out of your pool and out of the skimmer are no fun.

And what can you do about it to save yourself the unpleasant work?

The best way to get rid of worms in the pool is to block access to the pool.

A practical pool cover or a solar tarpaulin can help.

The solar tarpaulin has a double use at the pool. You can heat your pool water and keep the worms away with the solar tarp.

If possible, I would always use a solar cover for my pool – a regular cover will also work.

Only use the solar tarpaulin when it’s a bit cooler outside or when you expect heavy rain.

Putting a cover over the pool is not always easy, but in most cases, it is helpful to stop the worms – ideally, a roll-up pool system is used to do this.

Tip: Especially after winter, there are a lot of worms in the pool unless it is covered. Therefore, your pool should always be covered when wintering. You can find a detailed article on this in my blog.

2. Check the pool basin after a storm

The earthworms crawl out of the holes when it rains and spread in all directions.

It is time-consuming to check the pool basin after every storm, but this may give you a chance to catch the worms at the top of the pool before they fall into the water.

Collect the worms and release them a little further away from your pool because they are useful in the garden.

But what should be done if the earthworms have already landed in your swimming pool?

In this case, the worms must be eliminated with a net, but the easiest way to do this is with a pool robot.

The pool robot drives the pool automatically and removes the worms from the pool floor. Then the integrated filter basket has to be removed and emptied.

I hope you are not too squeamish.

Tip: worms in the pool can also be removed with a manual pool vacuum cleaner. Check out my blog for a helpful comparison of the best models.

3. Move plants around the pool

If there are many flowers and other plants around your pool, sooner or later, worms will end up in the pool.

Wherever there are plants, earthworms are usually not far away.

The gardening has certainly taken a lot of effort and beautifies the area around your pool, but if you have a problem with worms in your swimming pool, I recommend moving the vegetation around the pool.

Ideally, the plants are laid at least 5 meters from your pool – the further, the better.

This increases the distance a worm has to travel to your pool and reduces the risk of the animals falling into the pool water.

4. Sprinkle limestone around the swimming pool to prevent worms

Another method to combat worms in pool water is limestone (calcium). For this purpose, the ground limestone is sprinkled around your pool.

In most cases, the earthworms don’t like the limestone and change direction.

To be on the safe side, you can sprinkle some limestone on the pool crown, but make sure that nothing falls into the pool water.

The problem with this method is when a storm approaches, the limestone also ends up in your pool and disturbs the water balance.

In this case, you have to test the pool water regularly and optimize it. If necessary, you can find more information on this in the blog under the link.

Tip: I already explained how to restore the water balance in another detailed article if there is too much lime in the pool.

5. Increase the pool crown

Is the pool’s edge at the same height as the lawn in your garden? If so, then increasing the pool crown is worth considering.

Instead of keeping the edge of the pool level with the floor, the crown should be raised (if possible) at least a little to keep the worms out.

A small height is enough to prevent the worms from climbing over the edge and ending in your swimming pool.

But here I have to mention: Somehow, one or two worms make it over the edge into the pool.

So don’t expect a miracle against worms in your pool – Nevertheless, this method helps to minimize the number.

If there is one or the other worm on the ground, simply use a pool net to remove it.

Why are worms in the pool a problem?

It doesn’t matter how beneficial the worms are for the garden.

The animals have no business in your pool!

Most of the time, the worms spend underground and rarely come to the surface.

But in spring and autumn, the worms come out of the ground into the air when it gets a little cooler outside.

Even with heavy rains, you can often see dozens of worms crawling out of the holes – this is a protective instinct to avoid drowning.

Unfortunately, the earthworm’s sense of direction is not exactly the best.

It is not uncommon for the worms to end up in your swimming pool.

Once they land in the pool, the worms cannot get out on their own and drown.

This is a big problem for anyone who wants to keep the pool water clean.

Any organic dirt leads to clouding of the pool water and is associated with a lot of effort to remove the cloudiness.

Therefore, the worms should be removed from your pool as soon as possible.

FAQ about worms in the swimming pool

You will find further questions and answers about worms in the swimming pool below.

Are worms dangerous in the pool?

Earthworms are harmless to humans on contact.

In some countries, such as Venezuela, the earthworm is even a popular delicacy, similar to shrimp or snails.

Nevertheless, dead worms in a pool can lead to an increased formation of bacteria in the pool water and pose an indirect threat to human health if they are not removed from your pool.

In the worst case, the worms rot so fast that maggots can be found in the pool.

What kind of little red worms are on the surface of the water?

There are different types of worms. A plague often found in pool water is small red worms.

These are the mosquito larvae that breathe air on the water’s surface and filter out nutrients. Later the larvae pupate, and the mosquito hatches from them.

In my blog article, you can read all about mosquito larvae in your pool and how to get rid of them.

What kind of little white worms are in the pool?

If you see white worms in a swimming pool, it is likely to be maggots.

Don’t worry. It’s definitely not your pool maintenance that failed.

Maggots in pool water are a fairly common problem, and the cause often remains unsolved.

The only important thing is that the maggots are removed from the pool quickly – you can read about what to do with maggots in the swimming pool in my blog article.

Should you use insecticides against worms?

Insecticides should only be used in exceptional cases when everything else fails and the problem gets out of your hand.

The area around the pool is sprayed with insecticide.

The product kills all insects in the area and prevents others from getting near your pool. Unfortunately, many other beneficial insects like bees also disappear with this method.

Note: Please only use in exceptional cases and observe the regional laws on the use of insecticides.

Worms in your pool are not dangerous, just a little unsavory to look at.

Do you have any other questions about worms in the pool?

Contact me at @contactswimfool on Twitter. I will answer your questions personally and help you.

I hope you fix the problem with worms fast and enjoy swimming!

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Hi. I'm Max Berg. I've been in the pool industry since 2015 and have always felt drawn to water. I'm the author behind swimfool.com, where I share my years of experience in pool maintenance and give helpful tips on keeping a swimming pool or hot tub clean. My tips reduce the costs of water treatment and protect the environment.

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