How Much Bleach to Add to Pool? Guide to Proper Pool Maintenance

Owning a pool automatically means you need to learn the basics of properly maintaining it. With that said, people often wonder how much bleach to add to pool. This may be one of the most familiar questions a pool owner must learn and understand.

Additionally, you must also learn the proper ways of keeping your pool in its top condition. Knowing the basic pool maintenance ways as well as correct water treatment will keep your pool clean and safe.

As you go through this guide, I will help address the lingering question of how much bleach to add to pool? Additionally, I will also share a few basic tips on proper pool maintenance and water treatment.

How Much Bleach to Add to Pool?

To determine how much bleach to add to pool, you first need to take an accurate test of the water. This will determine the levels of the pool water and help you assess how much bleach is needed to be added.

In most cases and as a part of basic pool maintenance, testing the pool water is done on a day-to-day basis. Be that as it may, as a general rule, when it comes to the Free Available Chlorine (FAC) levels, this should be at around 2 to 4 ppm (parts per million).

The total chlorine or referred to as Combined Available Chlorine (CAC) should be at less than 0.2 ppm. Lastly, the pH level should be always kept at around 7.2 and 7.8.

Another important thing to also do is determine the amount of water in your pool. You can calculate this by multiplying the length, width, and the average depth of the pool together. This will give you an idea of how many gallons of water your pool can take up.

As an example, if your pool contains 30,000 gallons of water, you will need 126 ounces of bleach to reach the required level. To have a more constructive idea of how much bleach to add to pool, watch this short clip 

Knowing More about Using Bleach in Pools

Bleach is typically used or mixed to pool water to properly disinfect it. Maintaining the required level of chlorine or bleach will kill harmful microorganisms that can possibly cause health problems if you are exposed to it.

This is also the reason why it is important and highly recommended that you test your pool water on a daily basis. To give you a thorough understanding about bleach and the role it plays for the proper maintenance of your pool, there are some terms you need to be familiar about.

Free Available Chlorine or FAC

This is the level of chlorine or bleach in the pool water that has not yet reacted with contaminants. It is the portion of chlorine or bleach that can still kill harmful microorganisms and contaminants in the water.

Combined Available Chlorine or CAC

This is the amount of chlorine or bleach that has already reacted to contaminants like urine, perspiration, and other waste materials from swimmers. This is also referred to as chloramines and can often cause irritation to the eyes, skin, and a strong chlorine scent.

Total Chlorine

This is the amount of chlorine which includes both the Free Available Chlorine and the Combined Available Chlorine in the pool water.

Basic Tips to Keep in Mind for Proper Pool Maintenance and Water Treatment

Now that you have a deeper understanding of chlorine or bleach, here are some of the basic tips you need to always remember about pool maintenance and water treatment.

1. Remember to always read the manufacturer’s manual before doing or undergoing any tasks. This will help as a guide on steps you need to know that can have a core part of the process.

2. Always remember to store any chemicals or substances that you have used in cool, shaded, properly locked and dry areas. This will ensure your safety as chemicals can have different reactions when exposed to heat, sunlight, and other things. You must also ensure they are kept away or inaccessible by kids.

3. If you are going to put different chemicals or substances into your pool water, do not combine them together. This can cause dangerous reactions that might result in mishaps. Add these chemicals or substances separately into the water.

4. When working with different types of chemicals, always use a mask for you to avoid inhaling fumes and vapors. These can possibly be harmful to your health. Consequently, it is also recommended that you wear gloves when handling chemicals just to be on the safe side.

5. Remember that chemicals also have a specific shelf life. Avoid obtaining too much that has a possibility of not being used and can end up just being stored for a long time. They will most likely lose their effectivity and just go to waste. 


As a summary, when determining how much bleach to add to pool, you must first know the levels of chlorine in your pool water by testing it.

Another important element if knowing how many gallons of water your pool contains. Once you have these pieces of information, you can proceed to calculate how much bleach to add to pool.

However, as a general guide, you must always keep the Free Available Chlorine (FAC) levels at around 2 to 4 ppm (parts per million), the Combined Available Chlorine (CAC) at less than 0.2 ppm, and the pH level at around 7.2 and 7.8.

Was this article helpful in addressing your query of how much bleach to add to pool? Were you able to discover the essential details about pool maintenance and water treatment?

Do you have other suggestions regarding this topic? Feel free to let me know your thoughts by leaving your comment below.

Dan Harris

Hi. I'm Dan Harris. My wife and I started gardening 5 years ago. Neither one of us had any gardening background but we loved the idea of growing our own organic food. Over the years, our garden has almost doubled in size and I’ve learned a lot from my season’s successes and failures. I’ve been excited to share my own beginning knowledge and special skills with all garden lovers.

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