Bill > SB0504

This bill amends Michigan's Safe Drinking Water Act to establish a comprehensive microplastics testing program for public water supplies. Beginning July 1, 2027, and continuing through July 1, 2030, the state department will monitor and test public water supplies quarterly for microplastics, which are defined as solid plastic materials less than 5 millimeters in size. The program will examine various water sources, including Great Lakes shorelines, major tributaries, inland lakes, groundwater near agricultural and landfill operations, considering factors like water supply size and environmental justice impacts. Using established scientific sampling methods from organizations like the EPA and American Society for Testing and Materials, the program aims to conduct a preliminary risk assessment of microplastics in drinking water. By July 1, 2031, the department must submit a detailed report to legislative committees that includes comprehensive findings such as quarterly test results, microplastic quantities, source descriptions, and potential origins. The report will also provide recommendations for addressing microplastic presence, including potential toxicity limits, risk assessments, and suggestions for continued monitoring and public protection. This initiative represents a proactive approach to understanding and potentially mitigating potential health risks associated with microplastic contamination in drinking water.

Agriculture and Natural Resources

https://legislature.mi.gov/Bills/Bill?ObjectName=2025-SB-0504