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Security Aspects of the Free Chlorine Vs Monochloramine Debate for Disinfection by Product Control

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In recent years, there has been a move away from the utilization of free chlorine to maintain a residual level of disinfectant in the distribution system towards the use of monochloramine. The reason behind this change is to decrease the formation of disinfection byproducts (DBPs), which are created when the free chlorine reacts with organic material in the water. The use of monochloramines has been deemed to be an inexpensive and effective means to meet new stringent EPA limits for DBPs in drinking water. There are a number of well-known advantages and disadvantages entailed in using monochloramines for this purpose. The fact that many municipalities have made or are making the switch indicates that, to date, the advantages have outweighed the disadvantages. One area of potential concern that has been overlooked in the past dialogue weighing the pros and cons of switching has been the security repercussions entailed in a switch from free chlorine to monochloramine.
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Document Type: Research Article

Publication date: 2007-10-13

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