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chloramination
Chloramination is the treatment of drinking water with a chloramine disinfectant.〔(Chloramines ), Water Quality Association〕 Both chlorine and small amounts of ammonia are added to the water one at a time which react together to form chloramine (also called combined chlorine), a long lasting disinfectant. Chloramine disinfection is sometimes used in large distribution systems.
== Use ==
In the United States, the maintenance of what is called a "residual" of disinfectant that stays in the water distribution system while it is delivered to people's homes is required by the Environmental Protection Agency (EPA).
The EPA regulations give two choices for disinfectant residual — chlorine or chloramine. Many major water agencies are changing to chloramine to better meet current and anticipated federal drinking water regulations and to protect the public health.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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