Calcium hypochlorite is an inorganic compound added in granular or tablet form added to water to kill germs that can make people sick. When used correctly, this compound destroys germs that can cause numerous health problems.

Every year waterborne disease outbreaks occur because of public water distribution system deficiencies. A significant number of these outbreaks are caused by broken water mains or contamination of water mains during construction or repair. Disease outbreaks emphasize the importance of using proper procedures and methods when repairing water mains.

To prevent waterborne disease outbreaks, every supplier of water for a public water system must disinfect all newly constructed or repaired water distribution mains by the methods and procedures proposed. Calcium hypochlorite granules shall disinfect new water mains before they are placed in service.