Michigan · 2025-2026 Regular Session · Bill
SB 504: Water supply: quality and standards; testing and reporting of the amount of microplastics in public drinking water supplies; require. Amends sec. 5 of 1976 PA 399 (MCL 325.1005) & adds sec. 6a.
In committee Official data
- Introduced
- In committee
- Passed one chamber
- Passed both chambers
- Enacted
Last official action: ·Record last updated:
Plain-language summary
SB 504 is a bill introduced in the Michigan Senate on August 14, 2025. According to its official title, it concerns: Water supply: quality and standards; testing and reporting of the amount of microplastics in public drinking water supplies; require. Amends sec. 5 of 1976 PA 399 (MCL 325.1005) & adds sec. 6a. Primary sponsor: Dayna Polehanki (Democratic). It lists 7 additional sponsors. Most recent recorded action (March 11, 2026): REFERRED TO COMMITTEE OF THE WHOLE WITH SUBSTITUTE (S-1).
Generated automatically from the official title, sponsor list, and status record only. It does not characterize the bill’s purpose or effects. How summaries are written
Sponsors
Sponsors by party (alphabetical): Democratic 8
| Name | Role | Party | Chamber | District |
|---|---|---|---|---|
| Dayna Polehanki | Primary sponsor | Democratic | Senate | 5 |
| Rosemary Bayer | Co-sponsor | Democratic | Senate | 13 |
| Darrin Camilleri | Co-sponsor | Democratic | Senate | 4 |
| Mary Cavanagh | Co-sponsor | Democratic | Senate | 6 |
| Stephanie Chang | Co-sponsor | Democratic | Senate | 3 |
| Jeff Irwin | Co-sponsor | Democratic | Senate | 15 |
| Mallory McMorrow | Co-sponsor | Democratic | Senate | 8 |
| Sue Shink | Co-sponsor | Democratic | Senate | 14 |
“Support” is shown only as formal sponsorship recorded by the legislature. Roll-call votes are available on the official bill page.
Recent official actions
- REFERRED TO COMMITTEE OF THE WHOLE WITH SUBSTITUTE (S-1)
- REPORTED FAVORABLY WITH SUBSTITUTE (S-1) 3/10/2026
- REFERRED TO COMMITTEE ON NATURAL RESOURCES AND AGRICULTURE
- INTRODUCED BY SENATOR DAYNA POLEHANKI