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Occurrence of Trace Inorganic Contaminants in Drinking Water Distribution Systems (PDF)

  • Author(s): Peng, Ching-Yu; Hill, Andrew S.; Friedman, Melinda J.; Valentine, Richard L.; Larson, Gregory S.; Korshin, Gregory V.; Reiber, Steve H.; Romero, Angela M.Y.
  • Publications: Journal - American Water Works Association
  • Issue Date: March 2012
  • Volume / Number: 104, Number 3
  • Page(s): E181-E193
  • DOI: http://dx.doi.org/10.5942/jawwa.2012.104.0042
  • Product Number: JAW_0075568
Full Text: pdf
Expanded Summary: pdf

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Abstract

Many trace inorganic contaminants (e.g., lead, arsenic, nickel, vanadium, uranium) can accumulate on the surface of or be occluded within corrosion scales formed in drinking water distribution systems (DWDSs). However, few data are available on the actual concentrations of these contaminants beyond system entry points. An investigation was conducted to determine the occurrence levels and patterns of 11 trace inorganic contaminants in DWDSs. Among the trace inorganic contaminants that were found in practically all studied samples of intact corrosion scales and solids mobilized during hydrant flushing, barium was the most concentrated on a mass basis, followed by, in decreasing order, lead, nickel, vanadium, arsenic, chromium, uranium, cadmium, antimony, selenium, and thallium.

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