The current MCLs for total THMs and total HAAs in drinking water are 0.080 mg/L and 0.060 mg/L, respectively. Future regulations might lower the MCL for these DBPs, requiring plant operators to minimize total THMs and total HAAs concentrations in drinking water. To accomplish these goals, analytical methods are needed that will provide monitoring data in real-time or near real-time.
The overall goal of this research was to develop chemical analyzers and associated analytical methods for online monitoring of THM and HAA concentrations directly from drinking water distribution systems. The project has led to the development of several alternative analyzers for real-time monitoring of THMs and HAAs. The details of the construction and operation of the three most promising analyzers are provided. These three analyzers, operated in concert or separately, provide water utilities with relatively low cost simple alternatives for optimizing treatment practices with the possibility of minimizing the formation of THMs and HAAs.
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