Does Boiling Water Remove Chlorine?

Water is essential for life, but water contaminants can be debilitating. This is why it’s important that you treat your water prior to consuming it.

Does Boiling Water Remove Chlorine

Unfortunately, what comes through your faucet is not pure H2O, and your water supply will openly admit that in their yearly consumer reports. Instead, certain levels of contaminants are deemed either safe or unsafe.

There are various methods you can use to purify your water, including boiling it or chlorinating it.

However, ingesting too much chlorine can induce stomach aches, vomiting, and diarrhea, and it can also cause dry, itchy skin and eye irritation. In high doses, it can even be fatal.

So, this article is going to explore why chlorine is often used to purify water, whether there’s chlorine in your drinking water, what levels of chlorine in your water are safe, the effect of boiling on purifying water, and finally whether boiling water will remove chlorine from it.

Please feel free to scroll ahead to any section that jumps out at you. Here goes.

Why Chlorine Is Used To Purify Water

One of the primary means of purifying water is through chlorination, which is the application of chlorine dioxide to water. And it’s a popular method for good reason.

The chemical reactions that occur when chlorine dioxide is added to water serve to kill off water-borne organic contaminants and pathogens, including bacteria, viruses, and on occasion, also cysts, such as Giardia lamblia and Cryptosporidium.

But that’s not all – chlorine will also react with inorganic impurities as well, so it is considered by some to be a more effective method of purifying water than by the more common method of boiling water. (Seeing as boiling water does not remove inorganic impurities.)

This is why the use of chlorination has become such a popular treatment for water in swimming pools.

However, as we touched on in our introduction, ingesting too much chlorinated water is bad for you, causing such symptoms as stomach aches, vomiting, and diarrhea. So it is clear that you should not have too much chlorine in your drinking water.

Is The Water From Your Faucet Chlorinated?

So, it turns out that the main disinfectant method used by city water suppliers is chlorination.

Which, as you may imagine, means that yes, there is, in fact, a small amount of chlorine present in your water supply whenever you release water from your kitchen or bathroom faucet.

How Much Chlorine In Water Is Considered Safe To Drink?

Of course, your water supplier is not going to be tempted to supply you with water that’s dangerous to consume.

They take great care to test the water supply to ensure that it’s safe enough to drink, and they will even send you a consumer report which lays out exactly what’s in your water.

The reason that they are able to send you water that’s safe to drink even though it has undergone the process of chlorination is that they ensure that the levels of chlorine in the water falls under a level that is categorically safe for you to drink.

The cut-off safety point for chlorine in water stands at 4 milligrams per liter. Which means that so long as the chlorine levels in your water come to this amount or less, then the water is perfectly safe to drink.

Effectiveness Of Boiling Water To Purify It

Effectiveness Of Boiling Water To Purify It

In our other article titled “What Is The Best Way To Purify Water?” which is available on this link, we discuss three different ways of purifying water, including chlorination and boiling.

One of the reasons boiling water is considered such a great means of purifying water is because of how convenient it is. When you are at home, you can always boil your water in a kettle or on a stove top with the aid of a pan.

However, boiling your water before it arrives at your faucet simply isn’t possible for your water supplier, which is why they rely on other methods instead, such as chlorination.

Besides, there are some significant limitations of boiling water to purify it. Sure, on the one hand it’s great for getting rid of water-borne organic contaminants and pathogens, including the likes of bacteria, viruses, and so on.

But on the other hand, it’s not so good at getting rid of many of the inorganic contaminants you can find in water. Instead, for heavily contaminated water, these inorganic contaminants will simply set at the bottom of the container as the water boils.

So, despite how convenient boiling water can often be as a means of purifying it, it’s not 100% effective, since it only helps to remove the organic, biological contaminants.

This is why we often recommend using multiple methods to purify your water, if required and if you have the means to do so.

Does Boiling Water Remove Chlorine From It?

And now, I get to report the good news! It turns out that yes, boiling water for a period of 15 minutes is sufficient to release all of the chlorine from the water from your faucet (not necessarily from your swimming pool).

This is because the chlorine will naturally evaporate as the water boils. And in fact, chlorine can evaporate from water at lower temperatures as well. And this goes for both chlorine and chlorine dioxide.

Wrap Up

So, to sum up, although chlorine and chlorine dioxide can be used to help purify water for use in swimming pools or as drinking water, levels of chlorine that are too high can cause problems, inducing stomach aches, nausea, and vomiting. It can even be fatal.

However, so long as the chlorine in your water comes to under 4 mg per liter, then it will be perfectly safe to drink.

If you have more than that, however, then you should treat the water to remove it of excess chlorine before you drink it. And the good news is that you can do this very easily, simply by boiling it!

Mandy Anderson