Climate

Cigarette butts make up 12% of aquatic litter, global review finds

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Based on a feed excerpt; full article content has not been acquired. Source evidence retrieved 22/09/2026, 19:39:24 UTC.

Briefings

A 2026 global review analyzed data from 130 studies across 55 countries between 2013 and 2024, revealing that cigarette butts constitute approximately 12% of aquatic litter. Researchers found an average density of one cigarette butt every 4 square meters in various ecosystems, with coastal sites in Iran, Chile, Brazil, and Peru showing even higher concentrations. The study highlights that cigarette filters release toxic chemicals into water, while the paper and ash components can leach heavy metals and PAHs, potentially harming aquatic life.

Key points

• Cigarette butts account for roughly 12% of litter found in rivers, lakes, and beaches surveyed globally.
• Researchers pooled data from 130 studies conducted in 55 countries between 2013 and 2024.

Context and limitations

Data covers only 55 countries and 130 studies; findings are averages across ecosystems and may not reflect specific regional variations.

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