Journal
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
Volume 26, Issue 24, Pages 24581-24594Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s11356-019-05662-5
Keywords
Manganese; Cobalt; Chromium; Nickel; Pesticides; Land use and cover; Water human consumption
Categories
Funding
- National Health Foundation of Brazil (FUNASA) [CT 08/2013_PROC 25100.013898/2013-10]
- National Council for the Improvement of Higher Education (CAPES)
- Development of Education, Science and Technology of the State of Mato Grosso do Sul (FUNDECT)
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Groundwaters are normally consumed without previous treatment and therefore the monitoring of contaminants in order to guarantee its safety is necessary. Thus, we aimed to evaluate the groundwater contamination by metals and emerging contaminants, seeking to understand the relationship between their presence in the groundwater and the use and land cover profile of Itapora and Caarapo. In addition, the contaminant concentrations observed were compared with maximum permitted values (MPV) and/or with calculated water quality criteria (WQC) for human consumption to investigate possible human health risks due to the groundwater intake. We collected one groundwater sample from each of the 12 wells located in Itapora and 11 wells located in Caarapo. The metals were analyzed using ICP-OES and the emerging contaminants using LC-MS/MS. At least 1 of the 9 metals analyzed was found in each of the samples. In 12 samples, the metal concentrations verified exceeded the MPV or calculated WQC. A risk to human health has been observed for metals Co, Mn, Cr, and Ni. The emerging contaminant concentrations found in some samples were low (ng/L) and probably did not pose health risks, but their presence in the groundwater showed the impact of agriculture and the inadequate disposal of domestic sewage in the wells of both cities.
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