Identification of Rubber-Based Microplastics in Artificial Waters in Japan

Microplastics in Freshwater

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Freshwater environments face persistent contamination from microplastics and other emerging pollutants of microscopic origin, threatening ecosystems that billions of people rely on for drinking water and food. The ubiquity of microplastics in rivers, lakes, and groundwater means that human exposure through water consumption is effectively unavoidable without advanced treatment interventions.

Occurrence of Microplastics in Freshwater

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Researchers reviewed the occurrence and distribution of microplastics in freshwater ecosystems globally, finding that rivers, lakes, and groundwater are extensively contaminated from urban runoff, wastewater discharge, and atmospheric deposition, with cascading risks for biodiversity and ecosystem services.

Analysis of small microplastics in coastal surface water samples of the subtropical island of Okinawa, Japan

Emergence of Microplastics in the Aquatic Ecosystems: Sources and Their Characteristics

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Researchers reviewed the sources, physical and chemical characteristics, and environmental distribution of microplastics in aquatic ecosystems, covering both primary particles from industrial and personal care products and secondary particles generated through fragmentation of larger plastics. Understanding the diversity of particle sources and properties is foundational for modeling exposure pathways and predicting which ecosystems and human populations face the greatest contamination risk.

Microplastics in Aquatic Environment

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Researchers summarized how microplastics enter aquatic ecosystems from everyday plastics, industrial processes, and wastewater treatment plants, and reviewed evidence of the resulting harms to aquatic organisms and the broader food web.