Microplastics, including tire wear particles, can enter water through stormwater. A study collected samples from stormwater devices and wetlands to see how many microplastics were present. They found that the devices removed 35-88% of microplastics from stormwater. Tire wear particles were the most common type of microplastic, followed by polypropylene and poly(ethylene terephthalate). Wetlands can help reduce microplastics in stormwater, with higher levels found at the inlet compared to the outlet. This suggests that wetlands and stormwater devices can help stop microplastics from reaching waterways.