Will a Coffee Maker Purify Water? (Here’s How it Works)

Will a Coffee Maker Purify Water? Yes and No because it depends on a few factors which I will elaborate on in this article. Coffee is one of the most popular beverages out there and for most people, it is the ritual to start their day.

The process of brewing coffee requires heating up water till it is hot enough to mix properly with the ground coffee beans. Most people rely on a coffee maker to heat the water and mix the coffee to produce a delicious cup of coffee.

So many questions however have been asked about the purification of the water used to make the coffee. One of such questions is an attempt to know if the coffee maker itself purifies the water used for making coffee.

Before the question is answered, so many concepts must be considered first so that it will all make sense. One of the processes or methods of water purification includes boiling the water.

For water to be considered boiled, it must have been heated to a temperature of 212 degrees Fahrenheit or 100 degrees in Celsius and this is when germs can be killed and water can be purified.

However, the coffee maker does not boil water. It heats it up but not to the boiling point of 212 degrees Fahrenheit or 100 degrees in Celsius.

So why doesn’t the coffee maker boil water?

For good flavor and the best quality of coffee, the water must be heated but not up to the boiling point. Boiled coffee will be bitter and unpleasant so the coffee makers are not designed to boil water. The deduction from all of these is that since the water is not boiled in a coffee maker then it does not purify the water. So the simple answer to “will a coffee maker purify water?” is in the negative. Coffee makers do not purify water. However, customers often want to know the answer to a particular question when they are purchasing a coffee maker and it is; Will a coffee maker purify water?

It is important to note that manufacturers have come up with a solution to the problem. Modern coffee makers now have purifiers attached to them, to make sure that you get a good cup of coffee with purified water. 


People spend a lot of time and energy deciding the quality and the brand of the coffee beans that they take but they pay little or no attention to the water that is used to make the coffee. Two things make a cup of coffee; coffee and water. To ensure that the best quality and flavor of coffee is gotten, then the water source must be considered as a determining factor. The taste and flavor rely on the coffee and the water so they both should not be taken for granted. Aside from the taste, the health impact cannot be overlooked as well.

Most people do not think that the source of water is important or erroneously think that the coffee maker heats the water enough to purify the water. The problem is that they often blame the coffee brand or product, they blame the coffee maker or any other thing that they can think of except the water which is actually the problem. The unpleasant flavor can come from water but because most people do not know that bad water has a taste they do not suspect the water has anything to do with the odd taste of their cup of coffee.

However, purchasing a coffee maker with a purifier is an excellent solution to the problem. Even though a coffee maker does not purify water, the ones with purifiers make the problem of using impure water to brew coffee obsolete. 


The source of water is very important and can determine the taste of the water. Yes, you read right. Water can have a taste and it can even have a foul stench if it is from a bad source. Any coffee lover that wants to have a fresh and quality flavored cup of coffee must be sure to get water from a good source. For example; using tap water to brew coffee could have adverse effects on the health and produce an unpleasant taste. Tap water often has a metallic or acidic taste and it also contains a lot of impurities.

The ideal thing to do is to use filtered water to brew your coffee. Most experts recommend filtered or already purified water for making coffee for the best taste and flavor. It also means that with purified and filtered water one does not have to be worried about ingesting germs and impurities.

The safer solution as a source of water for brewing coffee has to be bottled water. They are often filtered and purified so they can be trusted to not cause an odd taste in the brewed coffee. Bottled water is far better than tap water. There is a clear distinction between the cup of coffee made from bottled water and the one made from tap water.


Since it has been resolved that coffee makers cannot purify the water then it goes without saying that the coffee maker must be supplied with purified water. What happens in a case where coffee is brewed with water with impurities? Would it be a problem?

The very first and obvious thing wrong with using water with impurities to brew coffee is the health effect. Impurities affect the body’s state of health adversely. There are lots of germs that can be found in impure water from sources like tap water and everyone knows what happens when germs are introduced into the body.

The second problem with brewing coffee with water that is not purified is that is affects the taste of the coffee. You cannot have good flavor from your cup of coffee when the water has an acidic or metallic taste. This acidic or metallic taste comes from impurities gives coffee a foul taste that is difficult to enjoy.

Lastly, so much waste can arise from using impure water. Since the coffee made with impure water is unpleasant then it is often thrown away leading to waste. This waste can be avoided by just using pure and filtered water to brew coffee.



Coffee consists of lots of water. In fact, water makes up 98% of a cup of coffee so it must be clean and purified for the coffee to turn out well. So much about the taste of coffee relies on the quality of water. Purchasing a good coffee beverage is important but it is only half the solution. Good water that is free of any impurities and contamination must be used for brewing.

Contaminations can be in the form of bacteria, fungi, mold, and even chemicals. Using water from the tap can expose you to these contaminations. It is also very difficult to just get rid of these particles by just boiling the water.

Also, the impurities in the water can clog and damage a coffee maker. Coffee makers should be cleaned regularly but if they are exposed to impurities that can damage them all the time then they would most likely not last long. Cleaning should not be too regular. Routine cleaning only leads to damage.


There is really nothing that can be done with a coffee maker as far as purification is concerned. Coffee makers do not purify water so high-quality water must be gotten from other means. Some of the sources of high-quality water include;

  •         Bottled spring water can be the way to go or the next best alternative would be to use filtered water to brew coffee.
  •         No matter how clean your water is, if you do not clean your coffee maker regularly and thoroughly then you will still have bad coffee. Cleaning of the coffee maker can be done weekly with vinegar or just water. The most vital parts of the coffee maker that needs thorough cleaning include the gaskets and filter. Most impurities hide in these spots and germs thrive in damp and warm parts of the coffee maker.   
  •         You can use the reverse osmosis filters. These filters help you convert tap water to high-quality water that you can use for your coffee. They are expensive but they are durable and effective as far as purification is concerned. The filter can be installed under the sink.
  •         Purchasing coffee makers with in-built filters might seem like the way to go. There are coffee maker brands that have filters that attempt to reduce the impurities in water but it is very limited. The charcoal filters that they mostly come with can help purify water but not to the extent of removing metals, germs, and other bacteria. So it is possible to have the coffee makers with filters while still struggling with bad coffee taste or flavor and bad smell too.



This brand of coffee maker comes with an in-built purifier that ensures that you do not have to worry about using impure water to brew your coffee. The purifier gets rid of the metallic taste and contaminations that would affect the taste of your coffee. It is also affordable and easy to use. Click here to see on Amazon


If you are worried about the size of a coffee maker with a purifier taking up the space in the kitchen then you must go for this brand of coffee maker. It is not large enough to take up so much space and yet it functions at a high capacity. You are guaranteed the best quality.  Click here to see on Amazon


This coffee maker is fast and easy to use. You can programme it to start purifying and brewing coffee way ahead of time while you are still asleep so that you do not waste time waiting around for your morning coffee. A very affordable and efficient machine with lots of positive customers’ review.  Click here to see on Amazon

Summary Of Will a Coffee Maker Purify Water

If you did not know the vitality of using purified water to make coffee then you might have an idea now after reading this article. Also, it has become obvious that coffee makers do not actually purify water and this means it lies on the user to supply the coffee maker with high-quality water to brew coffee.

Bad, contaminated coffee can very easily have adverse effects on health. There are germs and microorganisms in the water that should not be ingested. Also, the bad water affects directly the taste of coffee and even its smell. So it is important to use purified water.

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