What is NSWMA & MS4
Municipal Separate Storm Sewer System (MS4) General Permit
The Municipal Separate Storm Sewer System (MS4) General Permit became effective on April 7, 2003. The MS4 General Permit covers storm water discharges from small regulated urbanized areas as well as public institutions such as hospitals, universities, highways within urbanized areas, and prisons.
The regulatory definition of an MS4 (40 CFR 122.26(b)(8)) is "a conveyance or system of conveyances (including roads with drainage systems, municipal streets, catch basins, curbs, gutters, ditches, man-made channels, or storm drains):
(i) Owned or operated by a state, city, town, borough, county, parish, district, association, or other public body (created to or pursuant to state law)...including special districts under state law such as a sewer district, flood control district or drainage district, or similar entity, or an Indian tribe or an authorized Indian tribal organization, or a designated and approved management agency under section 208 of the Clean Water Act that discharges into waters of the United States.
(ii) Designed or used for collecting or conveying storm water;
(iii) Which is not a combined sewer; and
(iv) Which is not part of a Publicly Owned Treatment Works (POTW) as defined at 40 CFR 122.2."
Storm Water Managers
AJ Hill, City of Nitro Public Works Department
Ron King, City of Nitro Fire Department Code Enforcement
Contact: Email stw.mgr.nitro@nitrofd.com