mt-2026-489.1: Montana Pollutant Discharge Elimination System (MPDES) Permits, Definitions, and Designation Procedures for Small Municipal Separate Storm Sewer Systems (MS4s)
Public comment closed .
Get alerted when the next rule lands
New rules open for comment on their own schedule. Pick how you want to hear about them — we email you when one appears.
Publishing to members? Embed a live rule tracker on your own site — the proposed rules in your area and the comment deadlines closing on them, updating themselves. Free, one line of HTML.
Create a free account & build one →What this rule does
This proposed regulation outlines the definitions and procedures for managing small municipal separate storm sewer systems in Montana. It aims to establish permits for controlling pollutants that are discharged into the environment from these systems.
Plain-language description generated by AI — not the agency’s official summary, which we have not captured for this rule. Read the official text →
Don't miss the comment window
One Click Politics alerts you on every deadline, hearing, and rule change.
See all rules with comments due soon →