Big Berkey gravity-fed water filters are a top pick for clean water and long-term preparedness

The water filtration market is saturated with products that claim to provide clean drinking water. While all of them work to one degree or another, some can be complicated to install and maintain. And some are downright expensive on a per-gallon basis, too. The more popular faucet filters, for example, only filter a hundred gallons of water (or so) before requiring replacement. Personally, I like to have water filters that can handle several thousand gallons of water at a very low effective cost per gallon.

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