MIOX Corporation - Johnson Matthey`s Water Technologies

DBP reduction using mixed oxidants generated on site


The Safe Drinking Water Act (SDWA) was established by the US Environmental Protection Agency (USEPA) in 1974 to protect the quality of the nation’s drinking water. Although the use of disinfectants in drinking water has drastically reduced disease, these disinfectants can react with material in the raw water and form disinfection by-products (DBPs) that are also hazardous to health.

Initially, the government focused on reducing formation of chloroform, bromodichloromethane, dibromochloromethane, and bromoform—all components of a category designated as total trihalomethanes (TTHMs). TTHMs have been found to
cause liver, kidney, and central nervous system problems, as well as an increased risk of cancer. In 1979, USEPA set a TTHM limit of 100 μg/L for “large surface water systems,” defined as systems serving more than 10,000 people.

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