Biological Contaminants


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Contaminant

Source

Problem

Giardia

Human and Animal fecal wastes, especially beavers

Intestinal diseases  “Beaver fever”

Bacterial Dysentry

Water contaminated with fecal bacteria

Acute inflammation of the intestinal tract

Cryptosporidium

Fecal contaminated surface water

Flu-like symptoms that may last for months. Resistant to chlorine

E. Coli 0157:H7

Fecal coliform waste from warm-blooded animals

“Hamburger disease” intestinal hemorrhaging

Leginella

Natural waters; can grow in water heating systems

“Leginnaire’s disease”

Turbidity

Soil runoff

Interferes with disinfection

Salmonella typhi

Contaminated water supply

Typhoid

Hepatitis type A

Inadequate sewage treatment

Liver damage


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