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Children in low-income neighborhoods tend to be disproportionately exposed to environmental toxicants. This is cause for concern because exposure to environmental toxicants negatively affects health, which can impair academic success. To date, it is unknown if associations between air toxics and academic performance found in previous school-level studies persist when studying individual children. In pairing the National Air Toxics Assessment risk estimates for respiratory and diesel particulate matter risk disaggregated by source, with individual-level data collected through a mail survey, this paper examines the effects of exposure to residential environmental toxics on academic performance for individual children for the first time and adjusts for school-level effects using generalized estimating equations. We find that higher levels of residential air toxics, especially those from non-road mobile sources, are statistically significantly associated with lower grade point averages among fourth- and fifth-grade school children in El Paso (Texas, USA). [ABSTRACT FROM AUTHOR]

Waterborne diseases are a serious concern in the sister cities of El Paso, Texas, and Ciudad Juárez, Chihuahua, where many residents still lack access to plumbing. After using a relative risk method to illustrate the characteristics of neighborhoods at risk for waterborne diseases based on lack of plumbing, we ran spatial regression models predicting lack of plumbing to uncover similarities and differences between the two cities. In terms of similarities, lower mean education and higher proportions of young children were associated with lacking plumbing in both cities. Lower population density and higher proportions of female-headed households were significant only in Juárez, and proportion renting was negatively associated with lacking plumbing in Juárez, but positively associated in El Paso, pointing to differences in socio-spatial structure between the cities. In framing this issue as an environmental injustice, this study draws attention of the existence of households lacking plumbing in the United States and Mexico. [ABSTRACT FROM AUTHOR]