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Cysts

Microbiological contaminants can include harmless bacteria, as well as pathogens. Pathogens are families of microbiological organisms that are known to cause disease in humans, and can be a virus or a bacteria.

Pathogens are families of microbiological organisms that are known to cause disease in humans. The generally accepted definition of “water purification” is the destruction of pathogens, and providing pathogen free water is the primary focus of municipal water suppliers.

A group of pathogens, known as Oocyst Cysts, are larger microorganisms, typically 4 to 7 microns, and are very resistant to chemicals used in municipal disinfection. An example of an Oocyst is Cryptosporidium. The presence of Cysts has been verified in almost every major surface water supply within the US.

Cysts are similar to particles, and can be removed by mechanical filtration, unlike viruses and bacteria.

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