Why do your instructions say : “Do not allow filter to freeze?”

We strongly advise against freezing your elements as a general rule of caution. We also advise against storing the elements (even unused) in sub-freezing climates. The concern with freezing the elements is that any cold or freezing water will expand inside in the element, thereby increasing the pore size and ruining the element. Whether the […]

Read More

Do your filters take out plastic from the water?

There are various plastic materials that can be leeched into water and the most common are BPA ( Bisphenol A) and 1,1-Dichloroethane (11-DCA). The Black Berkey elements have been tested  to remove both of these plastic materials. Please refer to our lab testing results by clicking here

Read More

What happens if I use my Black Berkey® Elements after 3,000 gallons?

We determine the typical lifespan of the Black Berkey® Elements by their ability to reduce heavy metals. The breakthrough of heavy minerals can occur at about 3,000 gallons. Heavy metals can leach through beyond 3,000 gallons. However, the elements can be used  beyond that point because other reductions continue well beyond 3,000 gallons.

Read More

What should I do if the flow rate in my system is very slow?

If you just purchased your Berkey® system and the filters are hardly filtering water, the problem is typically due to high water tension. This high water tension prevents the air from being purged from the micro pores of the new filtration elements. Your Black Berkey™ elements need to be primed to purge this air out […]

Read More

What is the Micron rating of the Black Berkey® Elements

With respect to the micron rating, NMCL does not use or publish a micron rating for the Black Berkey® Elements for the following reasons: There is much confusion with respect to nominal and absolute micron ratings. An absolute micron rating is one that states the maximum pore size expected within an element. The nominal micron […]

Read More

Black Berkey® Element Specifications

BLACK BERKEY® ELEMENT SPECIFICATIONS Specially formulated to address 200+ typical contaminants found in tap water and other freshwater sources. Our unique Black Berkey® Elements are made from a proprietary blend of media, and are backed by independent third-party testing. The gold standard in gravity-fed water filtration, authentic Black Berkey® Elements are capable of greater contaminant […]

Read More