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Microplastics in drinking water
Summary
This thesis examined microplastic concentrations in a drinking water supply system from river source through treatment and distribution, finding that both natural filtration and water treatment significantly reduce but do not eliminate microplastics. Particle numbers increased during distribution, suggesting water infrastructure itself may act as a secondary contamination source.
This thesis examines microplastics in the drinking water supply system at the confluence of the Rokytná and Jihlava rivers. The main goal was to compare microplastic concentrations in both rivers in relation to catchment characteristics and to track changes during infiltration, treatment, and distribution. Results show that both natural filtration and water treatment significantly reduce concentrations and alter particle composition. However, microplastics were still detected in the treated water. A rise in particle numbers during distribution suggests the infrastructure may act as a secondary source. Nevertheless, drinking water remains a minor source of microplastic exposure according to current literature.