Assembly Bill 635 mandates that the Department of Natural Resources (DNR) notify relevant county and tribal health departments, as well as county land and conservation departments, when it identifies an exceedance of groundwater protection standards or standards for perfluoroalkyl or polyfluoroalkyl substances (PFAS). The DNR is required to provide this notification within seven business days of confirming the exceedance and must also inform adjacent counties that may be adversely affected. Additionally, the bill stipulates that the DNR must establish and maintain a notification system to keep these departments informed about such exceedances.

The bill introduces new legal language under section 283.90, which outlines the notification process and the responsibilities of the DNR regarding exceedances. It emphasizes the importance of timely communication to ensure public health and safety, as the notices will be subject to public inspection. The act is set to take effect on the first day of the seventh month following its publication.