Can you swim in a cloudy pool?

Can you swim in a cloudy pool? Cloudy water certainly isn’t pretty, but is it safe? The color and clarity of pool water can be affected by a variety of elements.

Is swimming in cloudy pool water safe?

A cloudy pool can be caused by several factors. While some are ideal for swimming, others are not. Filters, chemicals imbalances, or debris can all lead to cloudy water. Depending on what caused the murky water, swimming in it can irritate the skin and eyes.

Your pool may be cloudy, but you want to swim. Are cloudy pools safe to swim in? Generally, no. While cloudy water can be unsightly and unpleasant, for the most part, swimming in it may be harmful. In the only exception, there would be too many chemicals in the pool and it would become cloudy. These waters are not safe to swim in and should not be used.

It is not safe to swim in cloudy pool!

If you are thinking about a swim in a cloudy pool, you may wonder if it is safe? A chemical imbalance, a faulty filter, or debris in the pool can cause discolored or cloudy water. You can determine if it is safe to swim in a cloudy pool depending on why the water is cloudy.

A good idea would be to clean the pool before swimming if there is debris in it that makes the water dirty. Stay away from the pool until the water’s chemical levels have been balanced if there are too many chemicals in the water.

There are a couple of reasons why it is not safe to swim in a cloudy pool. Before we get into the reasons why it is not safe, let’s briefly go over the causes of cloudy pool water, so you will know how to treat it.

Determine the cause of cloudy pool water.

Pool pump and pool filter issues.

Various problems may result in cloudy pool water. The system may not be able to clean the entire pool if it only runs for a few hours each day. A worn or damaged part may be causing the problem if it runs regularly. Pool filter media that is clogged, improper water flow direction, and a full skimmer basket are other mechanical problems that may occur.

What to do?

Cleaning, pool maintenance, and regular running will keep your pool filtration system in good working order. Here are some things to look for:

You have a clogged pool filter or you have to foul on it. Clean your DE filter screens or backwash your sand filter if you haven’t done so in a while. You can also clean the cartridge in your filter if you haven’t done so in a while.

Debris is clogging up your skimmer or pool pump baskets. Make sure your skimmer basket and pool pump basket are free of leaves, branches, and other debris.

You need to replace the pool filters media. A damaged or worn filter media cannot remove the pollutants that cause pool cloudy water. It is thus recommended that you replace your sand or cartridge filter every 5 years or 2-3 years. Fresh diatomaceous earth powder or new DE screens should be added to your DE filter.

Use the filter for a long enough period. Cloudy pool water can be resolved by running the pool water through the filter system every day. At least 8-12 hours per day should be spent running your filtration system.

The pool pump and pool filter need to be replaced. The pool equipment may need to be replaced as your filtration system ages.

The environment.

Environmental factors in addition to inclement weather, wildlife, construction, trees, algae in the pool, and people, also include just about everything around the pool. As a result, dust, pollen, and algae can litter the pool.

People may be the most common cause of environmental contamination with their products, including hair, skin, and cosmetics which seep into the pool water, but they also bring dirt, sweat, skin, hair, and oils into the pool. Pool water can also become cloudy due to early algae growth.

What to do?

During the early stages of pool algae growth, shock the pool and clean the water thoroughly. Whenever debris or pollen accumulates in the pool, clean the pool water and check the balance.

Control algae growth. To treat cloudy pool water, you should first eliminate visible algae growth. Using algaecide won’t help. Instead, use it as a preventative measure. Cleaning the pool surfaces, scrubbing them, and vacuuming are all necessary steps to remove algae. Bypass the filter by vacuuming in waste mode. Next, shock your swimming pool.

After a downpour, you should balance, clean, and test your swimming pools. It is possible to have debris and dirt wash into your pool during a storm, and rain can dilute the water in your pool.

This can result in chlorine level dropping, which can cause water to become cloudy. The pool owner must be balanced pool water after a downpour, the pool cleaned, and the vacuuming should be performed.

Imbalance of chemicals

Cloudy pool water is frequently caused by a chemical imbalance. Cloudy pool water is most likely caused by incorrect chlorine level, pH and alkalinity imbalances, or high calcium hardness levels.

A pool water test kit can help determine if these causes exist. Sometimes, a pool that is balanced becomes cloudy after it has been shocked. It usually goes away by itself, so there is usually no need to worry.

How do I know which chemical in the pool is out of balance?

You need a simple, fast, and accurate test kit to determine which pool chemicals may be out of balance. Easy to use and very effective when used frequently, it saves me a lot of time.

The test measures pH, free chlorine, bound chlorine, total chlorine, bromine, calcium hardness, total alkalinity, and cyanuric acid. Then, I use a pool calculator to determine how many chemicals to add to have a crystal clear pool.

Low chlorine level

A pool that has a lot of debris, such as leaves, may have decreased chlorine level. Additionally, chlorine levels may become low if your water is exposed to the sun’s ultraviolet rays and your chlorine has not been stabilized or if there is a buildup of bodily contaminants in the water. Like sweat or sunscreen.

Check your free chlorine and bound chlorine levels. Add cyanuric acid to stabilize your outdoor pool and balance your chlorine level.

Check your free chlorine level.

The amount of “free chlorine” in your swimming pool is the amount of chlorine available to disinfect it. Low levels indicate that there isn’t enough chlorine in your pool. Test strips, liquid test kits, or take a sample from your local pool help you store can be used to determine how much free chlorine is in your pool. The free chlorine and bound chlorine values for chlorinated or saltwater pools should be between 1 and 3 parts per million (ppm).

Calculate the level of total chlorine.

You may get chloramines if the free chlorine level is lower than the total chlorine level. Byproducts of disinfection with chlorine, chloramines are irritating and can cause corrosion. A bound chlorine reading is a difference between your free chlorine and total chlorine readings. Bound chlorine shouldn’t exceed 0.5ppm.

Add calcium hypochlorite to your pool.

You can shock your pool with calcium hypochlorite to quickly raise free chlorine level and eliminate chloramines. In your pool, calcium hypochlorite should account for 60 to 80%.

In the high season, you should shock your pool once a week to keep the disinfectant levels high and to prevent cloudy pool water. You can add liquid chlorine or pool chlorine tablets to raise the chlorine level.

Add cyanuric acid.

In your pool water, you need to make sure your cyanuric acid level is right. Thus, the sun’s UV rays won’t destroy chlorine too rapidly. A CYA level of 30-50 ppm is ideal.

Below is a table that shows the desired chemical ranges.

6db4e028 f06c 4141 8aa3 8bea42dab80c

Other chemical imbalances.

As mentioned earlier – chemical imbalance can cause cloudy water.

Cyanuric acid

It is also possible for pool water cloudy when levels of phosphate and bromine are higher or stabilizers such as cyanuric acid (CYA) are unbalanced. Cyanuric acid can significantly reduce free chlorine levels, so if you frequently use it, you will need to keep your CYA and free chlorine level balanced. Whenever bacteria transform cyanuric acid into ammonia, the swimming pool water becomes severely turbid.

High Calcium Hardness.

When your pool water contains high levels of calcium hardness, excess calcium will accumulate in the swimming pool because it cannot dissolve in the water. Cloudy water is a result of not cleaning the pool and calcium hardness deposits are formed inside the pool.

When scale clogs your filter, your swimming pool water can become dirty or cloudy water, and the filtration can be poor. CH can only be reduced by partially draining and refilling your pool water.  Raise calcium hardness by adding calcium chloride to the pool water. You should maintain a calcium hardness level of 200 to 400 ppm at all times.

High Total Alkalinity (TA).

It is important to monitor TA levels closely as well. The increase in TA levels causes turbidity in the pool water through a rise in pH and calcium deposits. To reduce the total alkalinity, aeration is used after hydrochloric acid addition.

Incorrect pH level.

There are two most common causes. The pH of your water does not directly affect turbidity, but it does affect how chlorine levels and other chemicals behave. Saltwater and non-salt water pools, both of which have high pH levels, usually have cloudy pool water and calcium deposits as a result of calcium not dissolving properly.

If your pH declines too much, the chlorine will become very reactive and will quickly deplete. Your pool water is forming a lot of bound chlorine (chloramine), which is causing it to become murky and ineffective at killing harmful bacteria, algae, and other microorganisms.

How do you clear cloudy pool water fast?

safe to swim

To clear the cloudy pool water, there are two simple remedies. This is a pool clarifier, that clears cloudy water using the pool filter system. The second is a pool flocculant, also known as Pool Floc, a chemical that causes particles in the pool water to clump together and settle to the bottom.

While it’s more powerful and quicker than a pool cleaner, it’s also more labor-intensive and requires manual cleaning. If your pool’s filtration system is not large enough, it may take a few days to clear cloudy water. Any filter can be used with a pool clarifier, but it works best with less cloudy pool water.

How do I clean cloudy pool water using a clarifier?

Vacuum and clean the pool.

Use a powerful skimmer to remove large debris. Vacuum by hand after using a stiff pool brush to clean the pool surfaces well.

Analyze your water chemistry.

Use test strips or liquid tests to analyze your pool water chemistry. While test strips are easier and faster to use than liquid tests, their accuracy is less than that of liquid tests. If your pool water has poor water chemistry adjust the pH and alkalinity of the pool water as necessary to achieve a balanced pH and total alkalinity.

Shock your pool water.

If your pool has cloudy water, shock it with a large amount of chlorine to remove any pollutants or chloramines. Depending on the type of algae, you will need to double or triple the shock if your pool water is murky due to an algae bloom. Pool shocks are most effective during dusk or at night.

You should run the filter and let the shock dissolve overnight or at least for eight hours. Then test again.

Make sure your filter runs 24 hours.

It will take a few days for the cloudy water to clear, so run your filter continuously during that time. Once the water reaches its natural clarity, you can use the filter like usual.

Depending on your filter, you can clean your pool faster. By using DE filters, for example, very fine particles can be filtered out, and cloudy water can be cleaned more efficiently. It will take longer if your filter is a cartridge. The longest time will be if you have a sand filter.

Circulate your pool more.

Skimmers on top of pools cannot reach dirt or debris at the bottom. Increase the circulation of your pool’s water to get all of its water through the filter.

Adding a pool clarifier.

Adding a water clarifier is the next step after your pool water has circulated and the shock has dissipated. Clarifiers are useful for combining particles that are too small to be picked up by filters into larger ones. Ensure that you are adding the proper amount of clarifies according to the manufacturer’s instructions.

Clarifying the pool water will make cloudy water cleaner. Adding it every other day while the filter runs will give you clear pool water. Using a ground pool flocculant is necessary if your pool water is very murky.

How to clean a pool with flocculant?

You need to be able to vacuum the water from the pool to bypass the filter media because coagulated particles cannot be removed.

Check the pH levels.

pH testing strips and liquid test kits can be used to determine the pH levels of your pool water. The pH should then be raised or lowered as needed.

Add pool flocculant (Floc).

Pollutants in the pool water are bound by the pool flocculant. Bulk residue in the pool sinks to the bottom of the pool. Make sure that you add the appropriate amount of flocs based on the size of your pool by reading the manufacturer’s instructions.

Circulate the water.

Use a filtration system to circulate your pool for two hours. Use a multiport valve to bypass the filter by setting it to “recirculate.”.

To allow particles to settle to the bottom of the pool, shut off the filtration system for 8-12 hours after circulating the pool chemical for two hours.

Vacuum the water from your pool.

A large cloud should now form at the bottom of the pool. By now, the pool floc should have picked up all the murky particles on the water’s surface and dropped them to the bottom of the pool. Vacuuming is then necessary.

Water just blows back through the return nozzles if you vacuum it through the filtration system. Therefore, you must vacuum the water out of your pool.

It is important to move the cleaner slowly around the bottom of the pool, otherwise, you will pick up cloudy water. You may need to repeat the process several times. Allow the cloud to reset before continuing.

Balance your pool water.

Due to the removal of your pool water, your poor water chemistry needs to be rebalanced. Use test strips or the liquid test kit to test your pool water and adjust the pH and alkalinity. Add chlorine once the pH and alkalinity are balanced.

As soon as you remove the cloudy pool water, you can run your filtration system normally (either for 8-12 hours a day or for however long it takes to filter the water once).


Can I use baking soda to clean cloudy pool water?

NO! Baking soda is a base and significantly raises the pH level, which makes the swimming pool water cloudy. Some people may suggest using baking soda as a quick fix if the alkalinity is high, but it is not a reliable pool chemical. Chlorine should be the only substance used to clear cloudy water.

How long does it take for a cloudy pool to clear?

The amount of time it takes for your water to clear will depend on how cloudy it is. For best results with a clarifier, run your filter 24/7, balance your water’s chemistry, and add adequate amounts of water clarifier every other day until it’s clear.
With pool floc, you can make cloudy pool water crystal clear in just a few days. However, vacuuming the coagulated particles manually is the only way to remove them all.

Should you swim in cloudy pool water?

No, you shouldn’t. Cloudy water is contaminated with pathogens.

Why is my pool cloudy after shocking?

If you add shock to a clean and balanced pool, it can even temporarily cloud the water. As the filter runs, this condition will dissipate over time. Cheaper shocks can also cause this to happen.

Does too much chlorine make pool water cloudy?

A high chlorine dose, such as that used in pool shock, can temporarily cloud the water. Cloudy water is most likely caused by high pH, alkalinity, and calcium hardness levels.

Will rainwater make my pool cloudy?

Pools are often cloudy after heavy rainstorms. In addition to polluting your pool water, additional rain can throw off the chemistry of your pool water and decrease your chlorine levels.

Will a cloudy pool clear on its own?

Ultimately, your cloudy pool will clear on its own if you have a properly functioning filter system, correct chlorination, balanced water, and no algae. A pool clarifier or flocculant can be used instead.

Leave a Comment