Giardiasis and cryptosporidiosis are both infections caused by protozoan parasites (giardia lamblia and cryptosporidium parvum) that affect the gastrointestinal tract. While giardiasis is often mild, cryptosporidiosis is a serious intestinal illness. These infections are commonly provoked from the ingestion of food or water or food contaminated with the feces of infected animals or humans.

Diarrhea, gas, nausea, and cramps are common symptoms of giardiasis and cryptosporidiosis. The parasites are often found in outdoor water sources like lakes, streams, and swimming pools.

The Black Berkey® filters eliminate over 99.996% of cryptosporidium and have been proven to decrease the amount of Giardia cysts by more than 99.994%, as confirmed by these test results.