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The Cost of Pollution in the Upper Atoyac River Basin: A Systematic Review

The Atoyac River is among the two most polluted in Mexico. Water quality in the Upper Atoyac River Basin (UARB) has been devastated by industrial and municipal wastewater, as well as from effluents from local dwellers, that go through little to no treatment, affecting health, production, ecosystems and property value. We did a systematic review and mapping of the costs that pollution imposes on different sectors and localities in the UARB, and initially found 358 studies, of which 17 were of our particular interest. We focus on estimating the cost of pollution through different valuation methods such as averted costs, hedonic pricing, and contingent valuation, and for that we only use 10 studies. Costs range from less than a million to over $16 million dollars a year, depending on the sector, with agriculture, industry and tourism yielding the highest costs. This exercise is the first of its kind in the UARB that maps costs for sectors and localities affected, and sheds light on the need of additional research to estimate the total cost of pollution throughout the basin. This information may help design further research needs in the region.

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