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An Overall Perspective for the Study of Emerging Contaminants in Karst Aquifers
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This review examines emerging contaminant threats to karst aquifers, which supply about 25% of global drinking water, highlighting their high vulnerability to rapid surface-to-groundwater transport of microplastics, pharmaceuticals, pesticides, and other pollutants due to the open, fissured nature of carbonate rock systems.
Karst aquifers are essential drinking water sources, representing about 25% of the total available sources globally. Groundwater ecosystems consist of fissured carbonate rocks commonly covered with canopy collapse sinkholes. The open nature of karst aquifers makes them susceptible to rapidly transporting contaminants from the surface in dissolved and particulate forms. The principal aim of this review is to contribute to filling the gap in knowledge regarding major concerns affecting karst aquifers and understanding their vulnerabilities and dynamics. The principal groundwater pollutants of relevance are detailed in the present work, including well-known issues, such as the input of agriculture and its role in water quality. Emerging pollutants such as microplastics, still poorly studied in the groundwater systems, were also considered. Case studies for each typology of pollutant were highlighted, as their relative concerns for karst environments. Final considerations underlined an approach for studying karst environments more focused on understanding dynamics and links among different pollutants inputs and their drivers than on individual sources and impacts.
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This thesis investigates how microplastics and microfibres move through karst (limestone) systems and underground aquifers using a multidisciplinary approach, a concern because karst aquifers supply drinking water to roughly a quarter of the global population and are particularly vulnerable to contamination given their direct hydraulic connections to the surface.
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Short evidence note providing the first documentation that microplastics are present in karst groundwater systems, expanding known contamination pathways beyond surface water to underground drinking water sources. The finding has implications for human exposure through groundwater-sourced drinking water.
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This repository contains geospatial data and bibliographic records supporting a review of microplastic pollution in karst (limestone cave and sinkhole) systems, mapping where microplastics have been detected across these ecologically important groundwater environments. Karst systems supply drinking water to roughly a quarter of the world's population, making microplastic contamination there a significant but understudied human health concern.
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Researchers studied microplastic particle occurrence and distribution in karst and alluvial aquifer systems, investigating how these subsurface environments serve as sinks or conduits for plastic pollution. The study contributed data on groundwater microplastic contamination in geologically distinct aquifer types.
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Researchers used multi-tracer chemical fingerprinting to trace human wastewater contamination into karst spring systems, finding that these highly permeable aquifers rapidly transmit pollutants including pharmaceuticals and potentially microplastics from surface sources to drinking water springs.
Research digests by email
When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.