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AWWA WQTC64134
- Evaluation of a Regular Measurement Program of Water Quality Parameters in a Full-Scale Non-Chlorinated Distribution System
- Conference Proceeding by American Water Works Association, 11/01/2006
- Publisher: AWWA
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The water quality in the distribution network is not constant butchanges as it travels through the mains. Research on water deterioration in the network is mainly done by setting up special measuringprograms. Before starting such a complicated and expensive measuring program, existing data can be analyzed. The water company ofAmsterdam, Waternet, samples both the treated water and the waterin the distribution network on a regular basis. This paper presents astudy of the data of this measuring program from 1990until 2004. Temperature, oxygen, dissolved organic carbon (DOC),and zooplankton turn out to be correlated. At higher temperatures,more zooplankton grows, while both DOC and oxygen concentrationdecrease. Additionally, a clear correlation exists between turbidityand iron measured in water sampled from cast iron mains. Althoughanalyzing the data gives a good overview of the water quality, it is notsufficient to assess water-quality changes in the distribution network. Includes 3 references, table, figures.
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