This essential training program covers the safe handling, storage, and use of sodium hypochlorite and calcium hypochlorite—powerful disinfecting agents widely used in water and wastewater treatment facilities, swimming pools, spas, and industrial water systems. These chlorine-based chemicals are highly effective at killing bacteria, viruses, parasites, and fungi that may contaminate water supplies, but they also present significant safety hazards when handled improperly. Water treatment operators, pool maintenance personnel, and industrial workers will learn the chemical properties and disinfection mechanisms of both sodium hypochlorite (liquid bleach) and calcium hypochlorite (solid chlorine compounds). The course covers critical differences between these products, including concentration levels, storage requirements, and application methods for various water treatment scenarios. Participants will understand safe storage practices to prevent chemical degradation, dangerous reactions with incompatible materials, and off-gassing in confined spaces. The training addresses proper handling procedures, including safe transfer and dilution techniques, use of appropriate personal protective equipment (PPE) such as chemical-resistant gloves, eye protection, and respirators, and ventilation requirements for enclosed work areas. The program covers health effects of exposure including skin and eye burns, respiratory irritation, and potential chronic health impacts from repeated contact. Participants will learn first aid procedures for exposures, emergency response protocols for spills and releases, proper waste disposal methods, and regulatory compliance requirements. This comprehensive training ensures workers can safely handle these essential disinfectants while protecting themselves, their coworkers, and the public water supply from chemical hazards.