Are Chemex Filters Compostable?

Chemex filters are used to stop any bits of sediment or oils from making their way into your coffee. They are made from bonded paper, which is around 20–30% thicker compared to standard filter paper.

But, are Chemex filters compostable or do they just end up in the bin? That’s what we will be exploring today. Read our article to find out more!

What Does Compostable Mean?

Simply put, compostable refers to something that can break down into the earth naturally and turn into nutrient-rich soil. For example, some products that are compostable include:

• Coffee grounds and filters
• Fruit and vegetable peels
• Egg shells
• Tea bags (without plastic)
• Cardboard
• Paper straws

Anything compostable is good for the environment and doesn’t cause any harm when returned to nature.

Can Chemex Filters be Composted?

That being said, are Chemex coffee filters biodegradable? The answer is yes, they can! Chemex states that all of their filter paper is compostable and manufactured in the USA to adhere to responsible and sustainable practices.

So, instead of binning your Chemex filters, consider composting them in your garden. This way, you get to enjoy a smooth cup of coffee and look after the environment too. It’s a win-win!

Now that you know your Chemex filters can be composted, how exactly do you go about it? Is there a right way to compost the filters? Well, don’t worry, because we’re here to answer all your questions when it comes to composting Chemex filters!

How to Compost Chemex Filters?

When composting your Chemex filters, there is no need to separate the coffee grounds from the filters. This is because coffee grounds are rich in nitrogen and great when it comes to composting.

Here is a quick step-by-step guide on how to compost Chemex filters:

• Step 1: Choose your composting spot. Are you going to use a composting bin or simply compost the filters into the soil in your garden?
• Step 2: Add green materials, such as banana skin, to add more moisture and nitrogen to your compost.
• Step 3: Add brown materials, such as shredded paper or leaves, to give your compost a source of carbon.
• Step 4: Tear the filters into smaller pieces to speed up decomposition.
• Step 5: Compost the filters!

Are All Filters Compostable?

Although Chemex filters are compostable, this doesn’t mean all filters are. Some filters contain materials or coatings that make them unsuitable for composting.

There are many different types of filters used for a wide range of coffee makers, which is why it’s important to check if they are compostable. Some filters that aren’t compostable include:

• Reusable filters made of metal or nylon
• Filters with plastic or synthetic materials
• Bleached coffee filters

Some Chemex filters are ‘bleached’; however, they are still compostable because they are bleached using a chemical-free bleaching process called an oxygen cleansing bath.

When composted, Chemex filters take around 6–8 months to break down and decompose. If you were to compost a filter that wasn’t biodegradable, it may not break down efficiently.

Buy Your Filters at Crosby Coffee

Here at Crosby Coffee, we provide a wide range of coffee filters and brewing equipment for you to choose from.

Whether you are looking for 3-cup or 6-cup Chemex coffee filters, V60 filters or AeroPress filters, we have everything you need to start your at-home brewing journey today!

We also offer a selection of coffee blends that pair nicely with whatever coffee maker you use. Explore our brewing equipment today!