The bill H.286 aims to enhance drinking water standards in Vermont by mandating the Secretary of Natural Resources to amend the Department of Environmental Conservation's Water Supply Rule. Specifically, it proposes establishing a maximum contaminant level (MCL) of zero parts per trillion for certain perfluoroalkyl and polyfluoroalkyl substances (PFAS), including perfluorooctanoic acid and perfluorooctane sulfonic acid, among others. Additionally, the bill stipulates that an MCL of no more than 20 parts per trillion should be set for any other testable PFAS not specifically listed.

The bill includes new legal definitions for PFAS and outlines a timeline for implementation, requiring the Secretary to file a final proposed rule by July 1, 2026. The act is set to take effect on July 1, 2025. These measures are intended to protect public health by ensuring that drinking water is free from harmful levels of these substances.