2025 Senate Bill 504

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

A bill to amend 1976 PA 399, entitled “Safe drinking water act,” by amending section 5 (MCL 325.1005), as amended by 1998 PA 56, and by adding section 6a.

Official record

AI Analysis – Experimental

Senate Bill No. 504 and House Bill No. 4768 amends Michigan's Safe Drinking Water Act to require a three-year statewide microplastics monitoring program in public water supplies, culminating in a public report with findings and recommendations to address microplastics risks.

Introduced in the Senate

Aug. 14, 2025

Introduced by Sen. Dayna Polehanki (D-5) and seven co-sponsors

Co-sponsored by Sens. Stephanie Chang (D-3), Jeff Irwin (D-15), Mallory McMorrow (D-8), Rosemary Bayer (D-13), Mary Cavanagh (D-6), Darrin Camilleri (D-4) and Sue Shink (D-14)

Referred to the Committee on Natural Resources and Agriculture