Michigan Senate Bill SB0504

Michigan 2025-2026 Regular Session

• Introduced: 8/14/25
• Refer: 8/14/25

Caption

Water supply: quality and standards; testing and reporting of the amount of microplastics in public drinking water supplies; require.

Impact

The implications of SB 504 are significant, as it enhances the regulatory framework surrounding water quality in Michigan. By incorporating microplastics into the monitoring regime, the bill recognizes the increasing public health concerns regarding contaminants in drinking water. This legislation could lead to a more cautious approach in drinking water standards and provide state authorities with necessary data to mitigate any identified risks. Moreover, public water supplies are expected to be held to stricter accountability regarding the quality of water they deliver.

Summary

Senate Bill 504 aims to amend the existing Safe Drinking Water Act by introducing measures to monitor and report the presence of microplastics in public drinking water supplies. This bill requires the establishment and administration of a microplastics program that mandates testing on a quarterly basis. The program, which will begin in 2027 and run until 2030, is designed to gather baseline data and assess potential risks associated with microplastics found in drinking water. The monitoring will be conducted using established sampling methods endorsed by leading environmental and health organizations.

Contention

While SB 504 is largely supported due to its focus on protecting public health and ensuring safe drinking water, some concerns may arise regarding the feasibility of implementing such extensive testing. There could be debates around the costs involved in establishing the necessary infrastructure for regular testing and reporting. Additionally, stakeholders might question the potential impact on small water suppliers who may struggle with compliance. Environmental justice considerations are highlighted, as the implementation must also acknowledge and address disparities in water quality across different communities.