4.6 Article

Assessment of Human Pharmaceuticals in Drinking Water Catchments, Tap and Drinking Fountain Waters

Journal

APPLIED SCIENCES-BASEL
Volume 11, Issue 15, Pages -

Publisher

MDPI
DOI: 10.3390/app11157062

Keywords

environmental contaminants; pharmaceuticals; chemicals; Portugal; occurrence and fate

Funding

  1. FCT/MCTES through national funds [UIDB/50006/2020, UIDB/04326/2020, PTDC/BTA-BTA/31567/2017]

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By analyzing 97 samples collected from 31 different sites in central Portugal, it was found that the concentrations of pharmaceuticals in drinking water were below the method detection limits, indicating that the presence of pharmaceuticals in drinking water is unlikely to pose a threat to human health. This study contributes to a better understanding of the Portuguese and European context of drinking water quality.
Featured Application Authors are encouraged to provide a concise description of the specific application or a potential application of the work. This section is not mandatory. The occurrence of pharmaceuticals in water catchments and drinking waters raises potential risks to public health. Therefore, after addressing the major aquatic contamination pathway, the wastewater treatment plants (WWTPs), and, subsequently, surface waters, 18 human pharmaceuticals from 6 therapeutic groups (antibiotics, lipid regulators, selective serotonin reuptake inhibitors, non-steroidal anti-inflammatory drugs (NSAIDs) and hormones) were analyzed in drinking water catchments, tap and drinking fountain waters. This was performed by solid phase extraction (SPE) and liquid chromatography coupled with tandem mass detection (LC-MS/MS). The 97 samples analyzed were collected from 31 different sites in the center of Portugal. All samples presented concentrations below the method detection limits (MDLs) that ranged between 1.13 to 5.45 ng L-1. The achieved results contributed to a better knowledge on the Portuguese and European context of drinking water, since there is a knowledge gap regarding this matrix. Comparing our data with other studies, published worldwide, we can observe that median concentrations of pharmaceuticals were reported in the low ng L-1 levels, values close to our MDLs. Consequently, it is unlikely that, in light of the current knowledge, the presence of pharmaceuticals in drinking water presents a threat to human health.

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