E. Coli
Escherichia coli (commonly E. coli) is a bacteria that is commonly found in the lower intestine of warm-blooded animals.
Importance: is a bacterium that though not pathogenic itself, is an indicator for the presence of human feces and thus potential for the presence of pathogens.
Sources: leaky septic systems, combined sewer overflows
Values: To be safe for swimming there should be no more than 250 colonies/ 100 ml.
THE HEALTHIEST RIVER ACCORDING THE PRESENCE OF COLIFORMS IS :
OHIO RIVER.
Chicago RiverTotal number of non fecal coliform colonies= 66 +/- 25 (0-104) |
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