The water that you drink must pass through many tests before you consume it. Many treatments are used by companies to make it feasible for drinking. The water may not always be pure as there might be some leakages or accidents occurring here and there that make the water impure. There is a high risk of contamination if the water source is a private well. Some standard filtration methods, including reverse osmosis systems, can be used to offer a certain level of protection against harmful bacteria. Furthermore, water is known to be problematic as per bacteriological background. So it can...