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Rating method for evaluating distribution-system odors compared with a control.

A M Dietrich1, G A Burlingame, C Vest

  • 1Civil and Environmental Engineering, Virginia Tech, Blacksburg, VA 24061-0246, USA. andread@vt.edu

Water Science and Technology : a Journal of the International Association on Water Pollution Research
|July 9, 2004
PubMed
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A new sensory method quickly assesses drinking water odor in distribution systems. The method effectively identifies water quality changes, ensuring aesthetic standards are met for consumers.

Area of Science:

  • Environmental Science
  • Analytical Chemistry
  • Water Quality Management

Background:

  • Aesthetic water quality is crucial for consumer acceptance.
  • Monitoring water quality within distribution systems presents challenges.
  • Sensory evaluation is a key component of water quality assessment.

Purpose of the Study:

  • To develop and validate a new sensory method for evaluating aesthetic water quality in distribution systems.
  • To assess the method's ability to detect and characterize odor changes.
  • To determine the prevalence of odor issues in a full-scale water distribution network.

Main Methods:

  • A paired comparison sensory method was developed.
  • An odor panel evaluated distribution system water samples against a control sample.

Related Experiment Videos

  • Samples were assessed for odor difference and intensity over a three-month period.

    • Main Results:

    • The method successfully evaluated 118 distribution system water samples.
    • A consensus on odor characteristics was reached for 39 samples.
    • Approximately 90% of samples with consensus were rated as not different from the control, indicating minimal odor issues.

    Conclusions:

    • The developed sensory method is effective for rapidly assessing aesthetic water quality in distribution systems.
    • The method can distinguish between acceptable and problematic water odor profiles.
    • Findings suggest no major odor problems in the studied distribution system during the evaluation period.