The most reliable filters use gravity, not electricity, to remove metals, chemicals and other toxins from water. In a comprehensive laboratory study that tested water filters for the removal of heavy metals, the Big Berkey System performed the best!

See the actual results from the Health Ranger's CWC Labs, testing the Big Berkey with optional Fluoride / Arsenic removal filters. Reduction of elements by Big Berkey:

Aluminum: 86.6%

Copper: 100.0%

Arsenic: 100.0%

Strontium: 100.0%

Cadmium: 100.0%

Cesium: 98.6%

Mercury: 99.8%

Lead: 100.0%

Uranium: 100.0%

The most reliable filters use gravity, not electricity, to remove metals, chemicals and other toxins from water. In a comprehensive laboratory study that tested water filters for the removal of heavy metals, the Big Berkey system performed the best! 

See the actual results from the Health Ranger's CWC Labs, testing the Big Berkey with optional Fluoride / Arsenic removal filters. Reduction of elements by Big Berkey:

How does it accomplish all this? The Big Berkey System uses revolutionary ceramic filtration technology to remove toxic elements, parasites, bacteria and other contaminants from water. Amazingly, it uses no electricity and no pumps. For this reason, it's perfect for emergency use, camping, sustainable living or for travel to nations where the water can't be trusted.