Council Member Janet Anderson addresses a series of key questions related to risk-based drinking water regulation in this SDWA short-form video series. These informational videos are based on the newly released book, Safe Drinking Water Act: The Next Fifty Years, which explores the future of drinking water policy, the importance of prioritizing public health risks, emerging contaminants such as PFAS, and the need to balance scientific uncertainty, resource allocation, and infrastructure investment.
Janet Anderson discusses the importance of risk-based decision-making in drinking water regulation. Prioritizing risk means directing resources and regulatory efforts toward the drinking water challenges that are most likely to harm public health. This approach allows communities to address their most significant local risks and achieve the greatest health benefits.
Risk is something people navigate every day when making decisions about how to use limited resources. Whether at the household or community level, prioritizing risk means focusing on the needs and investments that will have the greatest impact on health, safety, and overall well-being.
The health effects of chemical exposure depend on both the amount and frequency of exposure. While people encounter many chemicals in their daily lives, the risk of adverse health effects generally increases only when exposure exceeds levels that the body can safely manage.
While the United States has established regulations for certain PFAS compounds, approaches to managing PFAS vary globally, reflecting ongoing scientific debate about appropriate exposure thresholds and the balance between health protection, cost, and feasibility.
Different countries often interpret the same scientific evidence in different ways when establishing drinking water standards. As a result, regulatory thresholds for contaminants such as PFAS can vary significantly across jurisdictions, reflecting differing approaches to balancing public health protection, scientific uncertainty, and resource allocation.
Ensuring safe drinking water over the next 50 years will require prioritizing investments in infrastructure and system improvements that pose the greatest risks to public health.
Policymakers should recognize that drinking water regulations often involve scientific uncertainty and policy judgment, requiring careful consideration of how limited resources can be used to achieve the greatest public health benefits. Effective solutions should allow flexibility for communities to address their most significant local risks while continuing to protect public health.
Learn more about these insights by reading the open-access book here.