We recommend these filters: 1.Big Berkey Gravity Water Filter - 2. Doulton Gravity Water Filter - 3. British Berkefeld. For more details check these filters in the search box below.

How many gallons of water does the Big Berkey water filter system purify (two Black Berkey filter elements) in one hour?

The Berkey water filter system purifies 3 1/2 Gallons (13.3 liters)

It will filter 7 Gallons (26.5 liters) per hour if you install four Black Berkey filter elements.