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Why Chlorine in Water is Harmful and Can Cause Cancer


What if we told you that this blog will shake your beliefs on the water you use ?

Sounds surprising. Right?

So, let’s take a lil drive back in time.
A time when we were attending science classes at school. Such a good time it was.

And those were the moments when our general science lessons should have made us learn, on how we are all using water that’s unhealthy for many a reasons.

Photo by Vlad Tchompalov

Part of this problem is a chemical that’s invisible to our eyes.

But here’s a shocker- Without using this chemical, your water cannot be free of bacteria and waterborne diseases.

And here comes the obvious question. Which chemical is used to treat water?

Its’ none other than “Chlorine”.

Well, we were just taught that chlorine is used to clean swimming pools or it is used to disinfect water. That’s it.

Should we need more? Of course. In today’s time we have to.

After Covid-19 outbreak we have learnt a great deal that health & hygiene should be our topmost priority.

Photo by Ketut Subiyanto 

Well today, Purifit reveals the unknown truths of chlorine inside your water that harms your health in the long run.

First let’s take a quick ride of the basics.


Chlorine is a chemical that’s used as a disinfectant for drinking water and swimming water. It gains a significant value because chlorine is added in water, to kill bacteria, viruses and other microorganisms present in water.

Photo by HowToGym

This process of treating water with chlorine is known as “Chlorination”. 

And chlorination helps in preventing the spread of waterborne diseases.

Today, chlorination has become a very popular method of disinfection and is used for treating water all around the world.

But, is it harmful to us?

Well, as per safewater.org

“In drinking water, the concentration of chlorine is usually very low and is thus not a concern in acute exposure. More of a concern is the long term risk of cancer due to chronic exposure to chlorinated water.”

Sigh, the second sentence on chlorine as a cause of cancer, is a hard-hitting truth.

But in our modern world, we have made good progress to get you rid of diseases caused by chlorination. Purifit assures you that you have landed at the right spot where we’ll offer you good reasons to easily filter out chlorine from the water you use every day.

But, here’s another one.


Here, in India, municipal bodies have this responsibility to disinfect the water that’s supplied to our home.

And the most common disinfectant they use is “chlorine”.

Photo by Marcin Jozwiak 

Its’ because chlorination process is easy to implement as compared with other water treatment methods. And chlorination is used to kill bacteria, viruses and other microbes in water.

N.B. No one shares the water quality report with Indian Citizens. As there’s no framework setup for sharing the parameters of potable drinking water with the Indian citizens. The only progress witnessed is the formation of a draft policy. This policy recommends to set up water testing labs at district, state and national levels.

Photo by Siavash Ghanbari

And how do they use chlorine in water? Let’s answer this.


To your surprise, the common types of chlorine used for disinfecting water, exists in three forms:

Chlorine Gas (Cl2) : Least expensive form of chlorine in gaseous state

Calcium Hypochlorite Ca(ClO)2 : Powdered form of chlorine that’s used for water purification of both, wastewater and drinking water. It’s even used for disinfection of swimming pools. Also available in tablet form & easily dissolves in water.

Sodium Hypochlorite (NaClO) : Available in Liquid form, it has a light yellow color and has strong odor of chlorine.

And here comes the bigger question of concern:


So, if you are drinking water or taking a shower, you have no time or reason to think on how pure the water is. And the chances are high, that the water contains harmful elements and unwanted levels of chlorine.

Photo by cottonbro 

It’s an open secret that we get exposed to chlorine in multiple ways.

Very common are:

  • Drinking and Eating
  • Breathing the fumes created by chlorine, and
  • Absorption through skin, eyes, nose, and ears

Well, there’s an alarm of concern too- Long exposure to chlorine leads to production of free radicals within human body. These free radicals are known to be the cause of cancer.

They even damage the cellular barriers of our lungs.

DID YOU KNOW: According to U.S. Council of Environmental Quality, “Risk of Developing Cancer is 93% higher among people who drink or are otherwise exposed to chlorinated water than those whose water does not contain chlorine”.

But wait. There’s something very shocking to learn-

“Chlorine used in water reacts with organic matter present in water and gives rise to a disinfection-by-product (DBP) called as Trihalomethanes (THMs).

These chemicals are associated with serious health effects such as cancer and adverse reproductive outcomes.”

And this is just one serious illness. There are more visible symptoms that are caused due to the exposure of chlorine. Let’s see which ones.


We found the most common symptoms reported among humans to be:

  • Breathing Difficulty : Inhalation of Chlorine Gas(chloroform) goes directly into our blood stream.
Photo by Brandon Nickerson

Inhalation of chlorine may also cause asthma and bronchitis.
These illnesses don’t show up initially, but with passing of time and use of unfiltered water, you’ll find difficulty in breathing caused by the breathing of toxicity of chlorine gas.

  • Irritation in Eyes : You’ll observe temporary symptoms, like redness in your eyes and blurriness. Well, red eye is the result of dehydration caused by chlorine when it removes the tear film of your eyes.

While, Conjunctivitis has also been reported to be caused due to chlorine.

  • Irritation of Skin : Our skin absorbs chlorine while bathing and showering.

More so, when we are bathing with hot water, our skin pores are opened up. This leads to absorption of chlorine and other chemicals present in water that eventually cause irritation on your skin.

  • Cough & Sore Throat : People with sensitive airways or allergy to chlorine may experience this issue of coughing while exercising or while laughing.

You’ll also find runny nose and sneezing.
That’s why it is recommended to take a shower before and after using the swimming pool.

Photo by cottonbro 

Moreover, it is always advised to install a shower filter with an activated carbon layer. Coz this carbon filter with charcoal granules, performs molecular bonding of chlorine ions with the charcoal.

Thereby, assuring you a flow of clean & healthy water for your family.

  • Congestion & Tightness in Chest : Since chlorine is a toxic irritant for our respiratory system, it may cause damage to our respiratory tract and nasal passages.
Photo by freestocks.org

Inflammation and obstruction of airways causes chest tightness and congestion. And then the patient requires treatment similar to the one prescribed by Asthma patients.

You’ll find less concentration of chlorine in drinking water. And that’s not a concern. But due to chronic exposure to chlorinated water, there are higher chances of carcinogenic elements leading to cancer in long term.

Well, it becomes really important to note that Amount of chlorine used is dependent on the amount of impurities present in water. In some cases, the water will need greater amounts of chlorine. While, in other cases the water will need lesser amounts for disinfection


Well, there are several popular methods that promise of water that gets free of chlorine and chloramines after you boil the water or treat it with expensive treatment systems.

But after an extensive research, Purifit team would recommend you to try a Shower Filter with Activated Carbon layer in it.

But why a shower filter?

Because there are multiple Benefits of a Good Shower Filter.

And foremost of them is-

A shower filter has Carbon Layers that, up to a large scale, remove 95% of chlorine, chloramines, bad odor, Trihalomethanes(Cancer causing elements) and other harmful Volatile Organic Compounds (VOCs).

It is also enriched with KDF(Kinetic Degradation Fluxion) filtering method.

This method uses copper-zinc alloy to convert free chlorine to chloride by performing oxidation.

And now the obvious question comes up.


Well, it’s a perfect answer for getting clean water for use while bathing, showering and swimming.

But we use water for various other applications too. From taps that are used for drinking water and the taps that are used for supplying water for washing clothes.

And at Purifit, we care for all your needs to ensure a clean water supply at your homes, offices, restaurants, schools, etc.

We do it by offering:


Explore & Book yours today from www.purifit.in or www.amazon.in and enjoy free shipping anywhere across India.

Enjoy Healthy Water.
Enjoy Healthy Life.

We hope that this blog has shared all important details on how you can remove chlorine from water and ensure good health for your family.

Please do share it with your friends and family and help them learn the harmful impacts of chlorine and how they can get clean & healthy water.

And at Purifit, we are dedicated to listen to the reviews of our blog readers, clients and all our patrons.

Feel free to write to us anytime at [email protected] and we’ll welcome all your queries with open arms.

Good Day Fellas.

photo by Alexas_Fotos 

Disclaimer : This is a promotional content and helps with general knowledge of the public when it comes to using clean water for bathing and other uses. All the facts and statements presented here, are also available to the public at large on all the platforms, blogs, social media and wholly on internet. If you experience or even feel like experiencing any of the diseases and health issues stated here, please refer to a dermatologist or the concerned health expert. In no way should this material (whole blog) be substituted as a health advice.


(Content Contributor for Purifit)

Akshay believes in spreading cheers with stories.
He loves writing blogs and content that span diverse domains of Healthcare, Design,
Technology and so much more.
A Post Graduate in Business Entrepreneurship from EDII-Gandhinagar, Akshay works closely
with Startups and New Brands, to deliver awesome Content that readers enjoy across all
Every weekend Akshay picks up loads of inspiration from Magazines. Those magazines that
share ideas on Luxury, Design, Branding and all things under our shiny sun.
Well, that’s how Akshay discovered his newfound hobby of collecting magazine covers. Covers
that boost his imagination and spark ideas for good copywriting and storytelling.

And Yes, he’ll amaze you with his Lifetime Mantra:

“An Investment in Knowledge pays the best interest”.

Wish to Drop him a word?
Contact him on his LinkedIn profile  or share your personal message for him on [email protected]

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