Cloudy Pool Water- What Are the Causes? And How Do I Treat It?

As a pool owner, you always want your pool to be clean, hygienic and dirt-free. You make all the efforts to maintain your pool in top condition. And yet, it may happen one fine day you wake up to find the pool’s water murky. Does this sound familiar? If it does, you are not alone. Cloudy pool water is a surprisingly common occurrence that can plague all spas and pools at some point in time. It’s when the pool water loses its luster. At its most extreme, you may not even be able to see the bottom of the pool.

In this article, we look at the causes behind a cloudy pool and some tips on how we can get rid of it.

Top Reasons Why You May Have A Cloudy Pool

Here are the most common causes of cloudy pool water:

1. Lack of Chlorination

We all know chlorine in the pool water helps to kill bacteria and algae and keeps your water safe to swim in. The chlorine levels keep fluctuating depending on how often the pool is being used, the amount of sunshine and the rainfall you receive. If the chlorine level becomes too concentrated or diluted, it can give the water an opaque appearance.

2. Filtration Issues

Depending on your pool’s size, type and the frequency of its usage, your pool pump and pool filter are required to run for certain hours daily. If you fail to follow this, the water in the pool can become dull, resulting in the accumulation of tiny particle and debris. This can make the water turbid.

3. Excess Calcium

If the calcium content in the pool’s water is too high, it makes the water hard, which gives it a cloudy appearance. The pool plumbing and filter of your pool can also take a serious beating if the calcium deposit levels rise in the pool. Conversely, pool water that does not have enough calcium content is also a problem as it turns the water too soft. This can easily corrode the surfaces and reduce the lifespan of your pool.

4. Low or High pH

The concentration of hydrogen in the pool water determines its basicity or acidity. The water is too acidic if the pH is less than 7.0 (too low). The water is too basic when the pH level is more than 8.0. When that happens, the chlorine is unable to purify the water as it should. Tiny particles and debris can easily corrode the pool’s lining and make it cloudy.

5. Too Much Rain

Contrary to popular belief, rainwater isn’t all that pure. It can mess up the levels of other chemicals in the pool water. It is best to monitor the pH, chlorine and other chemical levels in the water after the excessive rainfall. Adjust as needed to maintain the hygiene of your pool water.

Here’s How to Treat Cloudy Pool Water

Now that we have learned what causes cloudy pool water, it is time to learn how to fix it.

1. Ensure the water is tested

Even though you already know your pool water is milky, you may not know ‘why’ from the first glance. Pool water testing kits can help you answer this ‘why’. It can measure a host of factors that may be the reason your pool water is cloudy so you can fix it.

There are two ways in which you can test the pool water – purchasing test strips or purchasing a kit that includes reagents. A test strip can be dipped into the water sample to measure its calcium hardness, pH, chlorine and total alkalinity. Whereas, the reagents can be added to the water for testing. Based on the existing pH and chlorine levels, the water turns colors allowing you to balance the chemistry.

2. Consider using a pool clarifier

When you use a pool clarifier, tiny particles in the pool water can clump together. This makes it easier for your pool filter to filter the larger particles and remove them from the water. A pool clarifier reduces the murkiness of the water and turns it sparkling clear. Making it a part of your preventative pool maintenance is a good idea.

3. Use a pool flocculant

A pool floc is a powder that you can dissolve in some water and then spread over the pool’s surface. Once you do this, turn off your filter pump for up to 2 days. This will allow the particles to clump together and instead of getting filtered out from the filter, they will settle at the bottom of the pool. Using a manual vacuum, you can suck out the clumps from the bottom of the pool.

4. Assist your pool filter

While pool filters are effective for getting rid of particles that float on the water’s surface, they may not be as efficient to remove debris collected at the bottom. Here’s what you can do to keep the water clean:

  • Vacuum your pool: A smart way to assist your pool filter if you have an above ground pool is to vacuum it. Consider placing the pool’s vacuum cleaner at the center-bottom and turn it upside down. This helps to stir the particles towards the filter and keeps the water clean.
  • Brush the water: You can use a special pool brush to remove the debris from the water regularly by bringing it to the surface and filtering it out.
  • Use the drain: If you have an in-ground pool with a drain, you can occasionally open the drain to circulate the water. This will make the particles from the bottom rise to the top and get filtered by the pool filter.

5. Replace or clean your pool filter

The more your pool filter keeps getting clogged with debris, the less useful it becomes. It is a wise idea to use a commercial filter cleaner at least twice when the usage is at its peak. Regular cleaning can improve the appearance of your pool water. If the filter appears too gross, it’s best to replace it so it can do its job effectively.

6. Get serious about regular maintenance

It is no secret that regular maintenance of your pool can keep the water cleaner and more hygienic to enjoy a swim in. Consider monitoring the quality and health of your swimming pool once a week for the best results. From running the pool vacuum to getting rid of debris, you must cover it all. Also, remember to check the pH, chlorine and alkalinity level of your pool water. Regular maintenance of your pool can save you a considerable amount of money and time in the long run.

Bottom Line

Clearing up your pool does not have to be so complicated. You can follow the above tricks to remove the murkiness of your pool water and transform it into sparkling clean water. Vacuuming, regular maintenance, using a pool floc and basic filter maintenance can go a long way in keeping your pool in top shape.

If you are still unsure about doing this on your own, give us a call. Our friendly team would be more than happy to take this stress off your shoulders.