How To Clean A Coffee Maker With Bleach – Updated Guidance

Having a coffee maker at home is the best dream for any coffeeholic. Making coffee traditionally with cups, thermometer, and boiling pots is good enough, but it takes time, and sometimes you cannot ensure whether the drink is of sufficient quality or not.

Therefore, having a coffee maker is the best method overall. However, we do know that it is quite challenging to wash the machine perfectly without any residue remaining.

In this post, let’s discuss how to clean a coffee maker with bleach – the quickest and most effective method.

How To Clean A Coffee Maker With Bleach

Coffee Maker


Here is what you should prepare to clean a coffee maker with bleach. In terms of equipment, we demand to have a drip coffee maker (of course), a tablespoon, a container (to store bleach), and dry towels.

Regarding the ingredients, you must have bleach, hot water, and (another) cool fresh water to rinse the machine at the end. There is no standard ratio for you, but this is our figure for your preference: 1 tablespoon of bleach, 1 gallon of water to mix with bleach, and 5 gallons of water to clean the bleach later.


You still wonder how to clean coffee pot with bleach? Let’s dive deep into this section about cleaning a coffee maker with bleach, and you’re good to go!

Mix Bleach With Water

If you have ever thought that we will pour bleach directly into the machine, you’re completely wrong. Super wrong.

The bleach has an intense purification component, making it able to remove all dirt. For such influence, people use bleach whenever there is a need to erase thoroughly. Hence, how could we pour bleach directly into the machine that we will make drinks with later, right?

Let’s get to the point: we will mix bleach with water. The ideal rate (for us) is 1 gallon of water to 1 tablespoon of bleach. If you want to add more water, it’s alright. But please don’t add more bleach than one tablespoon since it can turn dangerous.

There is one point we need to be aware of: bleach provokes a unique but uncomfortable smell. Some people may faint or not feel well after smelling bleach’s fragrance.

In other cases, the bleach can spread quickly and influence others’ work. Hence, when mixing the water with bleach, make sure you are in a well-ventilated space. Try not to get the bleach interacting with your eyes and skin either since they can be susceptible to strong chemical ingredients in bleach.

Run The Mixture Through The Coffee Maker

After mixing the bleach mixture, now it’s time for the core step of the procedure: running the bleach through the coffee maker. Remember to remove all water that remained in the coffee maker before pouring the mixture.

Where do you run the bleach? The water reservoir. Simply turn off the coffee maker, dry it a bit, place a filter paper into the tube. Consequently, pour the bleach into the water reservoir. Then, wait for it to fully run through the machine.

Please ensure that the bleach will flow along with all components, including the coffee pot as well because the coffee residue can remain in any part.

Pour Out All Liquids Inside The Machine

Let’s move to the top important step of the process – pouring out all bleach outside. We use bleach to sterilize and clear all coffee stains, but we also need to remove all bleach residues either since it is harmful to absorb them.

So, how should you do this stage? After running the bleach mixture throughout the coffee maker, turn off the machine immediately and pour out the mixture.

Remember to turn off the coffee machine as fast as possible since the longer you let the bleach boil, the more the mixture hits the heating plate.

We all know that the heating plate is where all coffee and water run through when cooking, right? To reduce the chance of remaining bleach in coffee later, it is a must to “prevent” the heating place from the bleach.

Moreover, it can take a long time to pour the bleach mixture out of the machine.

Rinse The Coffee Maker With Hot Water

Now we need to rinse the coffee maker with hot, boiling water. The hotter the water, the better. Hence, we advise you to use boiling water from the built-in water tap of the machine.

The ideal amount of water to rinse the coffee maker thoroughly is a gallon. After getting a full gallon, pour it into the water tank as fast as possible and let it run along with the machine. The process requires no special note, just like when you are pouring water to make hot coffee.

Based on our experience, you should repeat the rinsing procedure about five times. Yes, it needs 5 gallons of water to ensure all bleach is removed!

At the final batch, try to smell the water tank to check if there is any bleach remaining. The bleach’s smell is a super signature, so you may figure it out immediately. Don’t worry about that.

Another way to check the bleach residue is to use pH paper testing. If the paper turns red, the bleach is still there.

So, what should you do if there is still bleach in coffee maker? If that is the case, repeat the rinsing process for the 6th and 7th time until no evidence of bleach is found.

Air Dry The Machine

Last but not least, let’s dry the coffee maker. The typical method to do this is to put the machine upside down for at least one day or more in the dry, airy space. It is a must to dry the coffee maker to add-in.

With this step, all bleach remaining on the coffee maker will turn into solid white specs. When seeing them, just run the fresh water through the machine again until all white debris floats away.

Some molds and microorganisms lived inside the inner parts of the coffee maker that you cannot recognize through normal sights. Hence, if possible, we advise you to unpack all the parts of the coffee maker and dry in a sunny space. The coffee maker will be cleaner.


Is It Safe To Wash Coffee Maker With Bleach?

Bleach is an artificial chemical substance made from the lab to sterilize, so its disinfection ability is super powerful. Given that fact, bleach is effective in killing all bacterias, as well as the useful microorganism in the human body if people accidentally drink it.

Therefore, it is impossible to state that “It is safe to wash coffee maker with bleach.” Using bleach is safe if conducting proper cleaning. Otherwise, you can experience poisoning.

We understand that some people will hesitate to use bleach because of its intense purification because we used to have that idea too. So, in case you don’t want to clean coffee maker with bleach, then what to run through coffee maker to clean?

Let me introduce you to some other safer detergents: vinegar, baking soda, and lemon juice.

The first one to mention is vinegar. Any type of vinegar is acceptable, but white vinegar is the best. Why? White vinegar has a high amount of antibacterial properties, especially when combined with salt at high temperatures. To add-in, it is safe, easy to find, or make it yourself.

Secondly, you can also make pure lemon juice to purify the coffee maker. The high acidity level of this ingredient is the main reason for its cleaning effect. It works well in removing calcium deposits, too.

The final one is baking soda. In fact, baking soda can be considered a “magic ingredient” since it works well in any case: cleaning, purifying, cooking, softening, etc.

With the strong purification feature, you can use baking soda to remove all bacteria and residues stuck inside the coffee machine. It is safe, cheap, and quite effective.

How Often Should You Clean The Coffee Maker?

The cleaning frequency must depend on how often you use the coffee maker. If you use the machine every day, we advise you to rinse and clean it daily with boiling water to remove all residues and coffee grinds.

In case you use the coffee maker twice or three times a week, then it’s acceptable to clean the machine every two weeks.

Once a month, clean the coffee maker carefully, from outside to inside, with cleaning substances such as vinegar, baking soda, bleach, etc. It’s a must to get your coffee machine clean at least one time a month.

Otherwise, the mold and bacteria can multiply and damage the coffee quality, causing diarrhea.

The Bottom Line

We have introduced how to clean a coffee maker with bleach. In our opinion, using bleach is effective in removing all stiff coffee residues and stains in the machine. However, unsafety is a big con.

Therefore, if you are not a careful cleaner or don’t use a coffee maker professionally every day, it’s better to find other methods to clear the machine. Vinegar and baking soda are two common approaches.

Kevin Richard

Hi all! I’m Kevin. I spend plenty of time in the kitchen every day because I love cooking healthy and delicious foods for my family and friends. Cooking gives me a chance to be creative and fun. It’s also one of the most meaningful ways to express my love and take care of my little family.

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