Civil Engineering MCQAE Level Civil Engineering
Which of the following about pathogen control in treated water is correct?
Environmental EngineeringDisinfectionMEDIUM
Choose the correct answer
A
disinfection removes all hardness
B
chlorine residual must always be zero
C
disinfection is unrelated to public health
D
chlorine residual helps protect water in the distribution system
Correct Answer
D. chlorine residual helps protect water in the distribution system
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Residual disinfectant provides continuing protection. Correct option: D.
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