Cryptosporidiosis is a disease caused by the parasite
Cryptosporidium parvum, which as late as 1976 was not
known to cause disease in humans.
1993, when over 400,000 people in Milwaukee, Wisconsin,
became ill with diarrhea after drinking contaminated
with the parasite, few people had heard of either
crytosporidiosis or the single-celled protozoon that
the Milwaukee outbreak, concern over the safety of
drinking water in the United States has increased, and
new attention has been focused on determining and
reducing the risk for cryptosporidiosis from community
and municipal water supplies.
That is why we buy
common type of water filter is a Reverse-osmosis water
filter which produces pure water by forcing tap water
through a membrane.. The membrane lets the water
molecules pass, but traps the impurities.
Reverse osmosis is quite a slow process for a
residential-grade filter. It may produce only a few
quarts of pure water per day.
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