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:: Volume 10, Issue 1 (Winter 2023) ::
Environ. Health Eng. Manag. 2023, 10(1): 107-119 Back to browse issues page
Wastewater reuse in agriculture: A review of soil and crops parasitic contamination, associated health risks and mitigation approach
Omar Amahmid * , Youssef El Guamri , Youness Rakibi , Mohamed Yazidi , Bouchra Razoki , Khadija Kaid Rassou , Hanane Achaq , Safia Basla , Mohamed Amine Zerdeb , Meriyam El Omari , Oulaid Touloun , Saïd Chakiri
Corresponding author: Regional Centre for Careers in Education and Training CRMEF Marrakech-Safi, Department of Life and Earth Sciences, Marrakech, Morocco , amahmid1969@gmail.com
Abstract:   (112 Views)
Background: Wastewater reuse in agriculture can potentially result in adverse health implications including parasitic diseases spread. Trichuris, Ascaris, and Giardia are major pathogenic parasites of concern associated with this practice. This review investigated their occurrence in wastewater, and environmental components reached through wastewater application, including irrigated soil and grown crops. Exposure pathways and evidence for health risks were also explored.
Methods: Several databases (Google Scholar, PubMed, Science Direct, Scopus, Web of Science, and ResearchGate) and other sites were searched for published literature up to 2021. The searched keywords include wastewater reuse, soil-transmitted helminths (STHs), Ascaris, Trichuris, Giardia, crop contamination, soil contamination, health risk, epidemiological studies, exposure pathways, and risk mitigation. Overall, 160 papers have been yielded. After screening for relevance, 60 studies were considered for inclusion.
Results: Giardia, Ascaris, and Trichuris were frequently detected in wastewater with up to 5 × 105 cysts/L and 5.73 × 103 eggs/L. Concentrations of 750 eggs/100 g and 2.8 × 104 cysts/100 g were reported in wastewater irrigated soil. Ascaris was reported in irrigated crops with up to 70 eggs/kg versus 6.6 × 103 cysts/kg for Giardia, depending on the type of crops. Epidemiological studies provided evidence supporting the increase of ascariasis, trichuriasis, and giardiasis diseases related to the exposure to wastewater irrigated soil and crops.
Conclusion: The findings suggest that wastewater reuse in agriculture leads to contamination of soil, and crops with pathogenic parasites, increasing health risks in the exposed groups. To remedy this issue, protection measures, including a multi-barrier approach, can be applied to mitigate the health risks engendered by wastewater reuse for irrigation.
Keywords: Wastewater reuse, Ascaris, Trichuris, Giardia, Epidemiologic studies
Full-Text [PDF 1115 kb]   (106 Downloads)    
Type of Study: Review Article | Subject: Special
Received: 2023/03/12 | Accepted: 2023/01/20 | Published: 2023/03/12
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Amahmid O, El Guamri Y, Rakibi Y, Yazidi M, Razoki B, Kaid Rassou K, et al . Wastewater reuse in agriculture: A review of soil and crops parasitic contamination, associated health risks and mitigation approach. Environ. Health Eng. Manag. 2023; 10 (1) :107-119
URL: http://ehemj.com/article-1-1086-en.html


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Volume 10, Issue 1 (Winter 2023) Back to browse issues page
Environmental Health Engineering And Management Journal Environmental Health Engineering And Management Journal
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