The corona crisis has created unprecedented demand for Berkey systems and subsequently a shortage has arisen. The manufacturer is working overtime to restore Berkey supply and we expect to have new Berkey stock before the end of August. If you would like to be alerted please send us an email specifying the Berkey model you want and we will notify you when it is back in stock. In the meantime the Black Berkey filters and PF-2 filters are available. Thank you for your understanding and we look forward to serving you in the near future.

Radiation Test Results

In response to rising concerns of possible radiological contamination of drinking water, NMCL (the Berkey manufacturer) is proud to announce the release of new radiation test results for the Black Berkey water filters. Following is a short summary of the radioactive contaminants found to be removed and links to the official pdf test results commissioned by the manufacturer. For the complete lab reports please see: Alpha Radiological Lab Test ResultsBeta Radiological Lab Test Results and Uranium Lab Test Results.

Gross Alpha Reduction Test Results

The Black Berkey filters were found to reduce the presence of radioactive Gross Alpha concentration in the tap water by at least 98.7%. Potential gross alpha contaminants/emitters in water:

  1. Americium-241
  2. Mendelevium-258
  3. Neptunium-237
  4. Plutonium-238 and -239
  5. Polonium-210
  6. Protactinium-231
  7. Radium-226 and -228
  8. Thorium-232
  9. Uranium-235 and -238
  10. Gross Beta Reduction Test Results

    The Black Berkey filters were found to reduce the presence of radioactive Gross Beta concentration in the tap water by at least 95.3%. Potential gross beta contaminants/emitters in water:

    1. Actinium-227
    2. Californium-251 and -252
    3. Cesium-137
    4. Cobalt-60
    5. Iodine-129 and -131
    6. Lead-210
    7. Nickel-63
    8. Promethium-145
    9. Strontium-90
    10. Technetium-99
    11. Uranium Reduction Test Results

      The Black Berkey filters were found to reduce the presence of radioactive Uranium concentration in the tap water by at least 97%.