Tank cleaning is important as it is the scientific method to disinfect tanks and free ourselves from water-borne diseases to live a healthy, safe life. It is important to clean and disinfect tanks frequently. Storage tanks may be contaminated from animals such as rats, the feet of workers, sediment materials, green algae, sludge etc. According to WHO Fact sheet, it’s imperative that water tanks are cleaned and disinfected currently, according to the risks of contamination brought about by lack of appropriate tank protection, lack of effective water disinfection practices, etc. If tanj cleaning left untreated, water-borne diseases can occur such as malaria, typhoid, cholera ….