From microplastics and greenwashing claims to conflicting state recycling labels: the exponential growth in scientific research and legal actions is fundamentally redrawing the risk landscape for every stakeholder in the plastics value chain. A comprehensive analysis published on May 13, 2026, in the trade portal Chemical Processing, authored by Catherina D. Narigon and L. Claire Hansen, highlights that lawsuits and regulations targeting the plastics industry have reached unprecedented levels.
The Exponential Growth of Scientific Research
Legal and regulatory interest surrounding plastics and microplastics did not emerge in a vacuum. Legal actions involving the plastics industry and plastic products closely coincide with a dramatic surge in scientific research focusing on plastics and microplastics. Interest from the scientific community regarding plastic pollution and exposure risks has skyrocketed. Based on data from peer-reviewed bibliometric studies cited by the experts, microplastics research output grew exponentially between 2010 and 2023, with publication rates accelerating sharply after 2018.
Beyond academic and scientific journals, federal agencies are also treating the issue as a priority. The U.S. Environmental Protection Agency (EPA) and the National Oceanic and Atmospheric Administration (NOAA) are both intensively researching the impacts of microplastics on water and marine life. Furthermore, the U.S. Department of Health and Human Services, in its Make America Healthy Again report, has designated microplastics as a key area of research, aiming to understand the health impacts of plastics across discrete areas such as chronic illnesses, cancer, and reproductive health.
Regulatory Trends: State and Federal Tightening
Over the past two decades, the regulation of plastics and microplastics has become a focal point of international and federal legislation. In the United States, regulation has expanded significantly over the past decade: while federal legislative activity has occurred more sporadically, state governments have enacted an increasing number of product-centric plastic restrictions (e.g., bag bans, expanded polystyrene restrictions, extended producer responsibility). More recently, regulators at both the state and federal levels have also targeted the chemicals used in plastics, including additives and processing aids (such as PFAS, phthalates, and flame retardants).
Internationally, plastics regulation has accelerated even more markedly. The European Union (EU) began adopting plastics-focused regulatory initiatives earlier than other jurisdictions, continuously expanding and refining its framework through successive legislative packages. The United Kingdom and Canada have followed suit, showing a clear acceleration in regulatory activity starting in the late 2010s and early 2020s.
The Surge in Litigation and Legal Trends
Plastics-related litigation grew slowly from the 1980s through the 2010s before accelerating sharply: estimates suggest that by 2025, the number of annual filings approached 95 cases in the United States.
The body of case law related to plastics and microplastics falls into several key areas:
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Federal and State Environmental Laws: Under the Clean Water Act (CWA), the Resource Conservation and Recovery Act, and other state laws, plaintiffs can directly challenge manufacturers regarding water quality or other environmental contamination issues.
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Public Nuisance and Consumer Protection Laws: State claims include public nuisance and demands arising from state consumer protection statutes, alleging misleading claims and false advertising related to the chemical composition of plastic products or the contamination of waterways.
“Greenwashing” and Labeling Contradictions: You Can Lose Even When You Win
The authors of the article highlight that lawsuits, which once focused on “black and white” issues like the illegal discharge of chemicals into the environment, have now shifted toward “gray area” issues, such as the “trueness” of recyclability labels. Even when plaintiffs cannot prove their claims, the litigation imposes a massive resource burden on defending companies, and the economic damage caused by legal costs and declining consumer trust can be significant—regardless of the lawsuit’s outcome.
Greenwashing allegations are often based on companies promoting their products as sustainable, compostable, or environmentally friendly, despite knowing that the real-world recycling infrastructure cannot process these materials at the requisite scale.
The situation is further complicated by a patchwork of conflicting state laws. A recycling label required in one state may expose a company to a lawsuit in another. For instance, California’s Truth in Labeling law (S.B. 343) strictly limits which resin types can be labeled as recyclable. This directly conflicts with the laws of other states, leading to serious jurisdictional conflicts, as demonstrated by the lawsuit filed by industry groups (California League of Food Producers v. Bonta).
The Future of Microplastics Litigation
The most crucial warning of the article is that microplastics litigation is coming—the science just hasn’t caught up yet. Courts have so far struggled to establish a causal link between microplastics and human harm because scientific evidence has not been available in sufficient depth. However, this window is closing fast: as federal research priorities and a wave of new legislation accelerate the science, the threshold of provability is drawing ever closer.
Stakeholders in the plastics industry must prepare for a dynamic environment where laws, regulations, and the public perception of processes and products are in flux and subject to change. In a fluid framework of uncertainty, diligence and informed decision-making are the best tools entities can utilize to minimize business harm.
Reference and Official Source:
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Chemical Processing (May 13, 2026): Plastics Industry Faces Rising Tide of Litigation, Regulation and Reputational Risk