Drinking water is one of the most import amenities required by us. However it is important to know whether certain water sources are safe to drink from. To do this, and analyse the presence of any pathological (disease causing) bacteria in the water sample, the Culture and Sensitivity Test is used. Culture refers to the growth of specific bacterial species in the water sample. While Sensitivity involves exposing them to various antibiotics to assess whether the water can be purified. This is particularly important in places where clean drinking water is scarce. The Test on Drinking Water is usually ordered when multiple people show disease symptoms after ingesting water from a particular source.