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 …
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 (MS4) - IN.gov
In 1990, Phase I of these requirements became effective, and municipalities with a population served by a municipal separate storm sewer system (MS4) of 100,000, or more, were regulated.
Municipal Stormwater Program - State of Michigan
An MS4 is a system of drainage (including roads, storm drains, pipes, and ditches, etc.) that is not a combined sewer or part of a sewage treatment plant. During wet weather, pollutants are …
MS4 Permit Program - Department of the Environment
The Phase II MS4 permits are similar to Phase I permits in that they require implementing stormwater best management practices and programs to reduce pollution discharges and to …
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 Stormwater - CT.gov
The General Permit for the Discharge of Stormwater from Small Municipal Separate Storm Sewer Systems ("MS4 General Permit") regulates stormwater discharges from storm sewer systems …
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 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.) …