October 09, 2025
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Study links bottled water to microplastic ingestion

A newly published meta-analysis in the Journal of Hazardous Materials by Concordia University researchers reviewed 141 studies and estimates people ingest 39,000–52,000 microplastic particles annually, with regular bottled-water drinkers consuming up to 90,000 more particles than tap-water drinkers. The paper highlights nanoplastics (<1 micron) that can cross biological barriers and urges standardized testing and stronger policies to limit plastic contamination in bottled water.

Health Science Environment

📌 Key Facts

  • Peer-reviewed meta-analysis of 141 studies on micro/nanoplastics from single-use plastic water bottles
  • Estimated ingestion: 39,000–52,000 particles/year; bottled water may add up to 90,000 particles annually
  • Authors warn nanoplastics can enter cells and organs and call for standardized testing and policy action; lead author Sarah Sajedi quoted