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Variations in sensitivity to chlorine in Ecuador and US consumers: implications for community water systems.

08:00 EDT 1st June 2019 | BioPortfolio

Summary of "Variations in sensitivity to chlorine in Ecuador and US consumers: implications for community water systems."

Successful implementation of chlorination for disinfecting community water systems in developing countries faces obstacles, with rejection of chlorinous flavor as a significant factor. Determining consumers' abilities to accurately detect chlorine in treated water is important to identifying acceptable chlorination levels that are also effective for water disinfection. Chlorine detection sensitivity was tested in untrained Ecuadorian consumers with limited prior experience with chlorinated water and US consumers with extensive prior experience with chlorinated water. Water samples with free chlorine concentrations up to 3.0 mg/L were presented for flavor testing. Ecuadorian consumers showed higher sensitivity, being able to detect chlorination at 2.0 and 3.0 mg/L, while US consumers did not reliably detect chlorine presence for any concentration levels. Additionally, Ecuadorian consumers' rejection of water samples depended on chlorination, showing a statistically significant increase in rejections of samples with chlorine concentrations above 1.0 mg/L. On the other hand, although US consumers rejected more samples overall, their tendency to reject did not vary as a function of chlorination levels. This study demonstrated that limited experience with chlorination is a critical factor for accurate chlorine flavor detection in drinking water.

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This article was published in the following journal.

Name: Journal of water and health
ISSN: 1477-8920
Pages: 428-441

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An oxyacid of chlorine (HClO) containing monovalent chlorine that acts as an oxidizing or reducing agent.

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