How can wind, stormwater runoff, and rivers carry plastic pollution into aquatic environments?

Plastic pollution enters aquatic environments through various pathways, as the ocean acts as a downstream receiving body for waste generated on land. Because much of this pollution originates from dispersed, diffuse sources rather than a single discharge point, it is transported into water systems through several environmental mechanisms:12

• Wind: Lightweight plastic items, such as single-use packaging, are easily picked up and carried by gusts of wind. This wind-transported debris can be deposited directly into bodies of water or moved from land-based litter sites into drainage systems and waterways.312
• Stormwater Runoff: When it rains, water flows over urban and rural landscapes, collecting improperly discarded plastic litter. This runoff carries the debris into storm drains, streams, and rivers, which eventually transport the material into larger aquatic ecosystems, including the ocean.12
• Rivers: Rivers serve as major conduits for plastic waste, transporting trash collected from both urban and rural areas downstream. Significant amounts of solid waste pollution in inland rivers and freshwater systems eventually make their way into the world's oceans.12

Addressing this issue requires improved waste management and proactive efforts to prevent plastics from entering the environment initially.1