State of Mississippi

mississippi stormwater laws and regulations

The state operates under the Mississippi Storm Water Program, regulated through the Mississippi NPDES MS4 Permit (Permit No. MSRMS4), and the voluntary state-wide Stormwater Guidance Manuals. Guidance manuals throughout the state were created individually by Phase I MS4s and a group of 19 Phase II municipalities. The state has no numerical standards for post-construction, however the individual MS4s must meet a maintenance and good housekeeping requirement. The general permit and guidance manual draft are available online.