Escherichia coli (E. coli) are commensal mammalian intestine bacteria and normally live in the intestines of people and animals. E. coli is also called faecal coli and causes infections in humans and animals like diarrhoea, severe abdominal cramps, bloody diarrhoea and vomiting. You may be exposed to E. coli from contaminated water or food, especially raw vegetables and undercooked ground beef. The presence of E. coli in any material, system or process suggests a low standard of hygiene and sewage contamination. Therefore all drinking water standards for E. coli TBC test kits, both National and International, are in terms of E. coli. Viz. (0 E. coli in 100 ml of water.) Only E. coli colonies will grow on the BACTASLYDE E. coli bacteria test kit and colonies will be of yellow colour. Since E. coli is the indicator of faecal contamination even a 10 count is alarming as all national and international standards for E.