Microscopically small single-cell organisms, that reproduce by fission of spores. Ridding your water supplies from the presence of bacteria is vital to preserving the health of any person exposed to these fluids. The removal process can be effectively done through a wide range of methods, which should be determined by the specific water source you’re dealing with, including the degree of inorganic substances and bacteria in the water. Many water treatment systems incorporate chemicals that target bacteria (inactivating), however, it can also be eradicated manually through filtration or more advanced methods such as ultraviolet sterilizers. There are costs and benefits for each method and it is up to you in deciding which would be the more logical choice for your bacterial problems. Continuous maintenance and monitoring is needed after setting up the water treatment system to ensure an efficient removal process. Chlorine is remained as the most widespread water treatment solution for removing bacteria from water. Nearly 99% of public water distribution systems utilize chlorine for disinfection purposes. The relative cost-effectiveness and productivity of chlorine have increased the trust and dependability from the public. Ozone disinfection has become another primary water purification method, mainly in industrial water treatment or food & beverage applications. As aforementioned, ultraviolet radiation is the most advanced bacteria removal method and is quickly gaining popularity as a result of its unmatched productivity, security, and practical ability.