A Cyst is a closed pocket or pouch of tissue; a cyst can be filled with air, fluid, pus, or other material. Common water-borne microbiological cysts are Cryptosporidium or Giardia cysts.
CRYPTOSPORIDIUM
Cryptosporidium is a parasite that enters lakes and rivers through sewage and animal waste. It causes cryptosporidiosis, a mild gastrointestinal disease. However, the disease can be severe or fatal for people with severely weakened immune systems.GIARDIA
Giardia lamblia is a parasite that enters lakes and rivers through sewage and animal waste. It causes gastrointestinal illness (e.g. diarrhea, vomiting, cramps). Giardia outbreaks can occur in communities where water supplies become contaminated with raw sewage. It can be contracted by drinking water from lakes or streams where water-dwelling animals such as beavers and muskrats, or where domestic animals such as sheep, have caused contamination.
Three excellent methods for removing cysts from drinking water is to super chlorinate the water, boil the water for one minute or use a one micron filter.
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