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.

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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.