Sensory research for the establishment of secondary maximum contaminant levels
1992
Bruvold, W.H.
Individuals naturally engage in sensory evaluation of water quality during daily consumption. Efforts to ensure that all consumers receive high quality water must attend to sensory evaluation; otherwise individuals can obtain repeated evidence of compromised quality that reduces confidence in public purveyors and regulating agencies. Sensory quality is currently regulated by the United States Environmental Protection Agency (USEPA) by promulgation of secondary maximum contaminant levels (SMCLs) governing taste and odor in drinking water. Efforts to establish new SMCLs for identified organic contaminants has been thwarted by a lack or research data even though standardized methods for sensory evaluation presently exist. The present paper recommends a broad based national research program designed to produce odor detection thresholds, flavor detection thresholds, flavor acceptability functions, flavor recognition thresholds, and flavor intensity functions for each current contaminant of concern which will provide a substantial basis for the desired SMCLs, and offer an unprecedented comparative evaluation of currently standardized sensory evaluation procedures.
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