Halazone is primarily used as a disinfectant for the purification of drinking water, especially in emergency or field conditions where access to clean water is limited. It effectively kills bacteria and inactivates many viruses and protozoa that can cause waterborne diseases such as cholera, typhoid, and dysentery. Halazone is commonly supplied in tablet form, making it easy to transport and use in remote areas, military operations, camping, and disaster relief efforts. The tablets are added directly to water, where they release chlorine to sanitize it within a short period. Due to its stability and ease of use, Halazone has been widely adopted in public health programs and by travelers in regions with unsafe water supplies.