How to recharge your charcoal

Our binchotan charcoal filters last about 3 months if you’re filtering 1.1L (37 fl oz) of water, or until you can taste the difference – at which point you should recharge.

Follow our easy guide below for instructions, it only takes 10 minutes.

Black and blum active charcoal water filters on a grey bench with eau good reusable charcoal water bottle.

Our quick guide

Once you’re followed these 3 easy steps, your charcoal will last another 3 months.

Woman removing active charcoal water filter carefully from glass carafe.

Step 1: Remove your charcoal

Be careful with glass products, for example our Eau Carafe, and ensure you empty any excess water, and slowly tip the charcoal stick out. 

Charcoal is an incredibly dense material, and dropping it into a glass bottle could cause the glass to crack.


Active charcoal water filter boiling in a saucepan of water.

Step 2: Boil for 10 minutes

Place your charcoal in a saucepan on a rolling boil for 10 minutes. This process draws out 3-month’s worth of impurities and leaves it as good as new, ready to filter again. 

Once finished, remove the charcoal with a pair of tongs and leave to cool. Take care as it might be hot.


Woman holing eau good charcoal filter water bottle in green park.

Step 3: Ready to go

Your charcoal can now be used to filter water for another 3 months! Simply place it back in your bottle or jug, fill with water and let sit for at least 1 hour to maximise its filtering abilities.

Take care with glass products. Make sure you fill with water before adding the charcoal. If you’d like to use our charcoal filters in other reusable bottles, we also have an Active Charcoal + Coil, which will hold it in place while you use it.

Once you’ve used your charcoal filter for another 3 months, it’ll be time to replace it. But don’t worry, there’s no need to throw out your old charcoal. There are plenty of secondary uses for this amazing material around the house and the garden. For more information about the history of binchotan charcoal, and how it works and secondary uses, read the blog.

Our binchotan charcoal water filters can be used in any water vessel, including different reusable water bottles, but also jugs and dispensers. We have an extensive range of charcoal filtration bottles, accessories and carafes – perfect for both at home and when you’re out and about.

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