Filtered water means better tasting coffee (and is better for your espresso machine too). That's why Extract Coffee Roasters partner with BWT for our water filtration. 

BWT bestmin Coffee is a one-​of-a-kind filter system unique anywhere in the world for mineralising low-​salt raw water, as can be found in mountainous regions and other soft water areas.

Its specific mineralisation refines raw water that is low in minerals to create a finely mineralised gourmet water ideal for all hot beverages and coffee specialities. In other words, it strips out the impurities you don't want and adds in minerals (like magnesium) which will enhance the final taste of your coffee. 

Moreover, the integrated BWT ultrafiltration membrane (0.1µm) ensures that the filtrate is always hygienically pure, virtually free of bacteria (retention rate of 99.9999%/log 6) and free of even the tiniest particulates and microplastics.