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National Institute of Environmental Health Sciences

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Your Environment. Your Health.

Publication Detail

Title: Co-Occurrence of Metal Contaminants in United States Public Water Systems in 2013-2015.

Authors: Thompson, Alesha K; Monti, Michele M; Gribble, Matthew O

Published In Int J Environ Res Public Health, (2021 07 26)

Abstract: The United States Environmental Protection Agency monitors contaminants in drinking water and consolidates these results in the National Contaminant Occurrence Database. Our objective was to assess the co-occurrence of metal contaminants (total chromium, hexavalent chromium, molybdenum, vanadium, cobalt, and strontium) over the years 2013-2015. We used multilevel Tobit regression models with state and water system-level random intercepts to predict the geometric mean of each contaminant occurring in each public water system, and estimated the pairwise correlations of predicted water system-specific geometric means across contaminants. We found that the geometric means of vanadium and total chromium were positively correlated both in large public water systems (r = 0.45, p < 0.01) and in small public water systems (r = 0.47, p < 0.01). Further research may address the cumulative human health impacts of ingesting more than one contaminant in drinking water.

PubMed ID: 34360177 Exiting the NIEHS site

MeSH Terms: No MeSH terms associated with this publication

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