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.

Can I purify lake water in a gravity filter?

Is it safe to drink the filtered lake or river water?

Yes. Big Berkey will filter out toxic substances. However, it would be wise to boil the lake water before filtering to kill bacteria that may infect your filtering system.