Program for the Reuse of Wastewater in México City

Villalobos, Guillermo Guerrero; Gámez, Gastón Mendoza; Herrera, Francisco Flores

doi:10.1016/b978-0-12-214880-4.50012-3

Cited by 2 publications

(1 citation statement)

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“…It has been estimated that about 73% of urban wastewater generated in India remains untreated (Development Finance Corporation) [ 46 ]. In Mexico, about 70,000 ha are irrigated with processed wastewater, while about 260,000 ha is irrigated with untreated wastewater [ 47 ]. Informal irrigation in Ghana involving wastewater diluted from streams and rivers occurs on 11,500 ha of an area larger than the reported extent of the formal irrigation in the country [ 48 ].…”

Section: The Current Global Scenario Of Wastewater Use For Crop Irmentioning

confidence: 99%

A Review of Environmental Contamination and Health Risk Assessment of Wastewater Use for Crop Irrigation with a Focus on Low and High-Income Countries

Khalid

Shahid

Natasha

et al. 2018

IJERPH

309

105

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Population densities and freshwater resources are not evenly distributed worldwide. This has forced farmers to use wastewater for the irrigation of food crops. This practice presents both positive and negative effects with respect to agricultural use, as well as in the context of environmental contamination and toxicology. Although wastewater is an important source of essential nutrients for plants, many environmental, sanitary, and health risks are also associated with the use of wastewater for crop irrigation due to the presence of toxic contaminants and microbes. This review highlights the harmful and beneficial impacts of wastewater irrigation on the physical, biological, and chemical properties of soil (pH, cations and anions, organic matter, microbial activity). We delineate the potentially toxic element (PTEs) build up in the soil and, as such, their transfer into plants and humans. The possible human health risks associated with the use of untreated wastewater for crop irrigation are also predicted and discussed. We compare the current condition of wastewater reuse in agriculture and the associated environmental and health issues between developing and developed countries. In addition, some integrated sustainable solutions and future perspectives are also proposed, keeping in view the regional and global context, as well as the grounded reality of wastewater use for crop production, sanitary and planning issues, remedial techniques, awareness among civil society, and the role of the government and the relevant stakeholders.

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Section: The Current Global Scenario Of Wastewater Use For Crop Irmentioning

confidence: 99%