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A One-Year Survey of Trihalomethane Concentration Changes Within a Distribution System

Robert W. Brett and Richard A. Calverley
Journal (American Water Works Association)
Vol. 71, No. 9, Trihalomethanes in Water: Diagnosis and Prognosis (September 1979), pp. 515-520
Stable URL: http://www.jstor.org/stable/41270348
Page Count: 6
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A One-Year Survey of Trihalomethane Concentration Changes Within a Distribution System
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Abstract

Over a one-year survey of the Southern Water Authority's Testwood pumping station (Southampton, England), trihalomethanes (THMs) were found to increase significantly within the distribution system where the treated water contained a chlorine residual, a THM precursor, or both. The authors conclude that if THMs are to be measured to ensure compliance with proposed maximum contaminant levels, the samples must be taken at the consumer's tap.

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