Safe, free of bacteria and readily available clean water is important for public health, whether it is used for drinking, domestic use, food production or recreational purposes. Cause of undisinfected water: Drinking undisinfected water may cause many diseases such as diarrhea, cholera, typhoid, or even death. According to the US Centers for Disease Control and Prevention (CDC) report in 2017, waterborne diseases cause about 7,000 death, 477,000 emergency department visits, and $3.8 billion for disease associated treatment. Therefore, access to clean water free of bacteria is the essential and basic need for public health [ 1 ]. What is the disinfection of water? The water treatment process to remove/inactivate bacteria is called disinfection. Generally, chlorine disinfection is a common technique to use control bacteria in water but it is limited by chemical transportation, storage, and the production of carcinogenic by-products. This type of commercial technique also suffer from ...