Microplastics, plastic pieces less than 5 mm, are widespread in the environment and a concern for human and environmental health. In aquatic environments, microplastic particles are often mistaken for food by fish and other wildlife which remain in their digestive system and can cause starvation. Microplastics also absorb and concentrate endocrine disruptors such as PCBs (polychlorinated biphenyls) and POPs (persistent organic pollutants). These molecules can cause reproductive and developmental issues in both wildlife and humans. Many studies characterize the microplastic load and composition in various environments; fewer studies have documented the changing microplastic concentrations over time. Our study fills in this gap by collecting and characterizing the current microplastic load at various points in Lake Washington and comparing these findings to data from ten years prior. Samples were collected from multiple sites in and around Lake Washington using a manta net for surface tows. Microplastics were extracted using an acid digestion and inspected under a microscope to characterize and quantify the microplastic load. The results of our study help expand upon previously collected data about Lake Washington and the change in microplastic concentrations. This study will hopefully inform local policies to address and mitigate microplastic pollution and its consequences.