Microorganisms
Microbiological contamination of water results from the presence of
microorganisms, such as bacteria, parasites and viruses, that can cause
disease in humans. Escherichia coli (E. coli) is one of them. Though
E. Coli is naturally present in our intestines, some types can cause
gastrointestinal diseases, including a severe form of diarrhea that can
lead to kidney failure and death. Sources of microbiological
contamination include untreated sewage, faulty septic systems, urban
stormwater, agricultural livestock operations and wildlife.