Stormwater Discharges from Municipal Sources | US EPA
Jun 6, 2025 · MS4 Resources Fact Sheet (pdf) (1.06 MB) - Overview of outreach materials and funding resources available from EPA.
Municipal Separate Storm Sewer Systems (MS4s) - South Carolina
By definition an MS4 is a system of conveyances that include, but are not limited to, catch basins, curbs, gutters, ditches, man-made channels, pipes, tunnels, and/or storm drains that discharge …
Municipal Separate Storm Sewer Systems (MS4) - Florida …
Dec 14, 2024 · A municipal separate storm sewer system (MS4) is a publicly-owned conveyance or system of conveyances (i.e., ditches, curbs, catch basins, underground pipes, etc.) …
MS4 Permit And Forms - NYSDEC - New York State Department of ...
This page contains the General Permit for Stormwater Discharges from Municipal Separate Storm Sewer Systems (MS4 GP) and the forms necessary to obtain coverage under that permit.
What is an MS4? - Penn State Extension
Jun 13, 2023 · What is an MS4? MS4 is short for "Municipal Separate Storm Sewer System," where the word “Municipal" refers to a unit of local government like a borough or a township, …
Municipal Separate Storm Sewer System (MS4) Permit - Stormwater
The MS4 program is a regulatory framework established by EPA, under the authority of the Clean Water Act National Pollutant Discharge Elimination System (NPDES), to treat these …
Municipal stormwater (MS4) - Minnesota Pollution Control Agency
Local public entities that own or operate municipal separate storm sewer systems (MS4) play a key role in preventing stormwater runoff from harming Minnesota’s valuable water resources.
Municipal Separate Storm Sewer System - DEP - NYC.gov
A municipal separate storm sewer system (MS4) is a publicly-owned conveyance or system of conveyances (including but not limited to streets, ditches, catch basins, curbs, gutters, and …
Municipal Stormwater Program | California State Water Resources …
U.S. EPA defines an MS4 as a conveyance or system of conveyances (including roads with drainage systems, municipal streets, catch basins, curbs, gutters, ditches, man-made …
What Are MS4s in Stormwater Management? Operator’s Guide
Nov 18, 2025 · The primary purpose of an MS4 program is to manage stormwater within urban areas to prevent pollution and protect water quality. MS4 programs aim to control the …