Contaminated with the fecal materials form humans and animals Enters rivers through discharge of waste from human sewage Soak in sewers Bacteria in the intestines of warm-blooded animals The septic allows coliforms in the effluent to flow into the drainage Drenched in Human sewage into surface Your ears are getting infected Dysentery and vital hepatitis Soak in the fluid of faeces Contamination with pathogens Industrial waste and animal sewage