Emerging risk assessment in areas affected by the Valencia DANA flood: Microplastics and pathogens in sediment and dust [DATASET]

Emerging risk assessment in areas affected by the Valencia DANA flood: Microplastics and pathogens in sediment and dust [DATASET]

Emerging risk assessment in areas affected by the Valencia DANA flood: Microplastics and pathogens in sediment and dust

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Scientists studied contamination left behind by severe floods in Spain and found dangerous microplastics (tiny plastic particles) and disease-causing germs in the mud and dust. The dust contained twice as many microplastics as the mud, with particles small enough to be breathed into lungs, while the mud was loaded with harmful bacteria and viruses like Salmonella and E. coli. This shows that major floods can spread both plastic pollution and infectious diseases into communities, creating serious health risks that could last long after the water recedes.

Microplastic Pollution in Freshwater Sediments: Spatial–Temporal Patterns

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This global review of freshwater sediment studies finds that human activities, stormwater runoff, water flow, and sediment grain size all shape where microplastics accumulate in rivers and lakes, but most data come from Asia with limited coverage elsewhere. Filling these geographic and temporal gaps is essential for understanding the long-term fate of microplastics in freshwater systems that supply drinking water worldwide.

Association of Potential Human Pathogens with Microplastics in Freshwater Systems

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Researchers reviewed evidence that microplastics in freshwater systems act as vectors for human bacterial pathogens, showing that the hydrophobic plastic surfaces and biofilm-forming capacity of microplastics enable colonization and transport of potentially dangerous microorganisms through aquatic environments and into drinking water supplies.

A Streamlined Protocol for Comprehensive Anthropogenic Particles and Microplastic Characterization in Canal Sediments: From Concentrations to Environmental Drivers

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Researchers applied a rapid FTIR-based protocol to 61 sediment sites along an 8 km stretch of the Scheldt River in France, finding plastic contamination at nearly all sites with polyethylene films dominating and an estimated 0.1 tonnes of plastic deposited in the riverbed. Efficient, standardized sediment monitoring protocols are essential for building global microplastic budgets and identifying river systems — which transport plastic from land to ocean — that require urgent remediation.