The Microbiological testing of water involves biological, biochemical or chemical methods for detecting and identifying microorganisms present in it. The process of testing includes sampling, filtration, culturing and incubation to arrive at the final results. The processes also help in ascertaining the number of contaminants in a sample of water. These tests are chiefly being used for testing of drinking and industrial water, and are being utilized the most by the pharmaceutical, bio-pharmaceutical and food industry.