In ____________ systems, ____________ formation is limited.

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Multiple Choice

In ____________ systems, ____________ formation is limited.

Explanation:
Disinfectant choice changes which disinfection byproducts form and how much. When a system uses chloramines (chloramination), there is less free chlorine-like reactivity available to oxidize natural organic matter into haloacetic acids. That milder oxidant activity tends to limit the formation of the five regulated haloacetic acids (HAA5). So, in chloraminated systems, HAA5 formation is constrained. Chloramination still reduces some other byproducts as well, but the specific relationship highlighted here is that HAA5 formation is limited with chloramines. Chlorine dioxide creates a different DBP pattern, so it doesn’t match the statement as directly.

Disinfectant choice changes which disinfection byproducts form and how much. When a system uses chloramines (chloramination), there is less free chlorine-like reactivity available to oxidize natural organic matter into haloacetic acids. That milder oxidant activity tends to limit the formation of the five regulated haloacetic acids (HAA5). So, in chloraminated systems, HAA5 formation is constrained. Chloramination still reduces some other byproducts as well, but the specific relationship highlighted here is that HAA5 formation is limited with chloramines. Chlorine dioxide creates a different DBP pattern, so it doesn’t match the statement as directly.

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