DIPRA Water infrastructure decisions are designed to last for generations. Engineers, utilities, and community leaders invest significant time evaluating performance, cost, reliability, and long-term risk before selecting materials for critical water systems.
Today, another consideration is drawing increased attention: vinyl chloride.
The U.S. Environmental Protection Agency (EPA) is currently conducting a risk evaluation of vinyl chloride under the Toxic Substances Control Act (TSCA). Vinyl chloride is a known human carcinogen and the primary building block used in the manufacturing of polyvinyl chloride (PVC).
While the evaluation process is ongoing, the review serves as an important reminder that infrastructure decisions made today may be impacted by evolving regulatory, environmental, and public health considerations.
Understanding Vinyl Chloride
Vinyl chloride is a colorless, flammable gas that does not occur naturally and must be produced industrially. Its primary use is the production of PVC, a plastic material commonly used in a variety of products, including water and wastewater pipe, wire and cable coatings, and packaging materials.
The chemical itself has been studied for decades. According to organizations including the International Agency for Research on Cancer (IARC) and the National Toxicology Program (NTP), exposure to vinyl chloride has been associated with an increased risk of several cancers, including a rare form of liver cancer known as hepatic angiosarcoma, as well as liver cancer, brain cancer, lung cancer, lymphoma, and leukemia.
While exposure risks vary depending on circumstances, the EPA's ongoing evaluation is examining potential risks associated with vinyl chloride throughout its lifecycle, from production and processing to use and disposal.
Why the EPA Review Matters
The Toxic Substances Control Act gives the EPA authority to evaluate chemicals that may present an unreasonable risk to human health or the environment. As part of that responsibility, the agency reviews available scientific data, exposure pathways, and potential impacts before determining whether regulatory action is warranted. The current vinyl chloride review is part of that process.
For engineers and utility leaders, the review is noteworthy because vinyl chloride serves as the foundational chemical used to manufacture PVC. Although the evaluation focuses on vinyl chloride itself, the outcome could influence future discussions surrounding material selection, risk management, regulatory compliance, and long-term infrastructure planning.
Water infrastructure projects are often expected to remain in service for decades. Understanding how evolving regulations and emerging research may affect infrastructure materials is an important part of responsible asset management.
Making Informed Water Infrastructure Decisions
Material selection has always involved balancing performance, durability, cost, constructability, and long-term service expectations. Decision makers are also considering broader environmental and regulatory factors when evaluating infrastructure investments.
As the EPA's risk evaluation progresses, engineers, utilities, and community leaders have an opportunity to stay informed about the science, the regulatory process, and the potential implications for infrastructure projects.
Infrastructure decisions made today will shape communities for generations. Having access to accurate information helps ensure those decisions are made with a clear understanding of both current needs and future considerations.
To learn more about vinyl chloride, the EPA's ongoing review process, and considerations for water infrastructure materials, visit Informed Water Choices.
