Mostly, strains of Escherichia coli are harmless and can live in our intestines of healthy humans or animal’s intestine. 
But, one strain used to called E. coli O157:H7 has been known as one of the strains which produced powerfull toxin that can cause severe illness. Folllow these informations about things you should know about E. coli O157:H7 especially in our drinking water.
Maybe if you eat a contaminated lettuce, sproud, salami, drinking unpasteurized milk or juice, drinking a sewage-contaminated water while swimming, eating meat has not been well-cooked to eliminate E. coli O157:H7 are things that can cause you to be infected by this strain. The symptoms of an E. coli O157:H7 infection can appear of no symtoms at all, but it can show as severe bloody diarrhea and abdominal cramps. There is no need to be a fever present until the illness go away in 5-10 days.
Those are little sections describe Escherichia coli O157:H7 strain. You can find out more information about E. coli O157:H7 such as how to diagnose, how can E. coli O157:H7 get into our drinking water, about HUS (Hemolytic Uremic Syndrome), the infection’s treatment, and how to remove E. coli O157:H7 from our drinking water, in the article which is issued by the CDC official site below.
Complete read of What You Should Know about Escherichia coli O157:H7 in drinking water here in pdf filetype.
