When calcium hypochlorite is used for disinfecting a water supply, which method describes the recommended approach?

• A. dissolved in water as a dry chemical then injected into the water system
• B. dissolved in water as a dry chemical, allow to settle and the supernatant siphoned off and fed into the water system
• C. fed as a dry chemical directly into the pipeline
• D. dissolved in water, allow to settle, and the supernatant siphoned off and fed into the water system

Answer: (B)