Preprint Article Version 1 This version is not peer-reviewed

Atoyac River pollution Dynamics. Case Study: Emilio Portes Gil, Puebla, México

Version 1 : Received: 28 November 2017 / Approved: 29 November 2017 / Online: 29 November 2017 (07:43:21 CET)

A peer-reviewed article of this Preprint also exists.

Pérez Castresana, G.; Tamariz Flores, V.; López Reyes, L.; Hernández Aldana, F.; Castelán Vega, R.; Morán Perales, J.L.; García Suastegui, W.A.; Díaz Fonseca, A.; Handal Silva, A. Atoyac River Pollution in the Metropolitan Area of Puebla, México. Water 2018, 10, 267. Pérez Castresana, G.; Tamariz Flores, V.; López Reyes, L.; Hernández Aldana, F.; Castelán Vega, R.; Morán Perales, J.L.; García Suastegui, W.A.; Díaz Fonseca, A.; Handal Silva, A. Atoyac River Pollution in the Metropolitan Area of Puebla, México. Water 2018, 10, 267.

Journal reference: Water 2018, 10, 267
DOI: 10.3390/w10030267

Abstract

The Atoyac River crosses the metropolitan area of Puebla, Mexico, and presents a condition of severe degradation that has been poorly studied. The research was conducted in the year 2016 and analyzed the space-time dynamics of the water quality of the river, the increase in pollution in the period 2011–2016, and the water quality of the Atoyac River used for agricultural irrigation and human consumption in the population of Emilio Portes Gil, Ocoyucan, based on official Mexican standards (NOMs). The anoxic state of the river was demonstrated (~1.47 mgO2/L) and the high organic pollution, particularly in drought, as well as the presence of large populations of coliform bacteria, and 11 enterobacteries of pathogenic importance. The pollution recorded an average increase of 49% in the period 2011-2016, and the values of Fe, Al, Pb, and Cd in variable percentages. It was evidenced that water for irrigation and wells is contaminated with fecal bacteria (104–549 NMP/100 mL), including pathogenic. In wells, the concentration of heavy metals was 5 times higher in drought. These results represent a serious threat for the population of Emilio Portes Gil and the environment in the metropolitan area of Puebla.

Subject Areas

Atoyac River; water pollution; heavy metals; coliforms; Emilio Portes Gil; Puebla

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