Wastewater-irrigated vegetables: market handling versus irrigation water quality.


Ensink, JH; Mahmood, T; Dalsgaard, A; (2007) Wastewater-irrigated vegetables: market handling versus irrigation water quality. Tropical medicine & international health, 12 (s2). pp. 2-7. ISSN 1360-2276 DOI: https://doi.org/10.1111/j.1365-3156.2007.01935.x

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Abstract

Objective and methods Vegetables irrigated with untreated domestic wastewater were, at the time of harvest, analysed for the presence of the faecal indicator, Escherichia coli, and helminth eggs in Faisalabad, Pakistan. Vegetables from the same harvested batch were collected approximately 12 h later from the local market. Results The survey found relatively low concentrations of E. coli (1.9 E. coli per gram), but relatively high concentrations of helminths (0.7 eggs per gram) on vegetables collected from agricultural fields. Higher concentration of both E. coli (14.3 E. coli per gram) and helminths (2.1 eggs per gram) were recovered from the vegetables collected from the market. Conclusions The results of the survey suggest that unhygienic post harvest handling was the major source of produce contamination. Interventions at the market, such as the provision of clean water to wash produce in, are better ways to protect public health and more cost effective than wastewater treatment.

Item Type: Article
Faculty and Department: Faculty of Infectious and Tropical Diseases > Dept of Disease Control
PubMed ID: 18005309
Web of Science ID: 251053400002
URI: http://researchonline.lshtm.ac.uk/id/eprint/8626

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