Bacterial contamination causes severe digestive problems, fever, nausea, diarrhea and sometimes even death. According to the EPA, total coliform and E. coli bacteria testing is recommended twice a year. Our simple, do-it-yourself test identifies dangerous bacteria in 48 hours. Optional lab analysis is available, which indicates the exact count and type of bacteria present. PRO-LAB's Bacteria in Water Test Kit utilizes patented EPA approved laboratory analytical method for accuracy and reliability.