In the last decade, many U.S. drinking water utilities have moved away from chlorine disinfection to other alternatives such as chloramine, chlorine dioxide, and ozone. In most cases, utilities have changed disinfectants to comply with standards for regulated DBPs. ​Although alternative disinfectants may minimize the formation of these regulated DBPs, they generally form other DBPs that are not currently regulated and may also have negative health effects. This section will cover nitrogenous, iodinated halogenated, and nonhalogenated DBPs. ​

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