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Method 127: Determination of Monochloramine Concentration in Drinking Water
Citation:
Alexander, M., T. Waters, D. Wahman, AND G. Smith. Method 127: Determination of Monochloramine Concentration in Drinking Water. U.S. Environmental Protection Agency, Washington, DC, 2021.
Impact/Purpose:
The environmental or health problem addressed by the study: A method for the determination of monochloramine concentration in drinking water has been developed. A general description of the work and results: Experiments have been conducted to develop an indophenol method to measure monochloramine in drinking water. The long term importance or significance of the findings: The method describes measuring the monochloramine concentration when using the indophenol method for drinking water samples. Who would be interested in or could apply the results (e.g. program or regional partners, general public, local communities): Drinking water utilities, researchers, regulators, engineers, Regions, OW
Description:
A method for the determination of monochloramine concentration in drinking water has been developed. It requires the use of a bench-top or portable colorimeter, spectrophotometer, or a mesofluidic channel pump colorimeter (also known as a portable parallel analyzer (PPA)). This method is intended for use by analysts skilled in the operation of the instrumentation and interpretation of the associated data. It is primarily intended to be used by drinking water utilities using chloramines for compliance with daily monitoring requirements or process control.