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MS4 stands for Municipal Separate Storm Sewer Systems which are systems or conveyances that drain stormwater runoff. This includes catch basins, storm sewers owned and operated by public or private entities, channels, ditches, curbs, etc. and is not part of a combined or sanitary sewer system.

A Municipality is bound by the US Environmental Protection Agency (EPA) and the Pennsylvania Department of Environmental Protection (PADEP) to meet the state and federal stormwater regulations associated with the Federal Cleanwater Act under the MS4 Program. A municipality is considered an MS4 when a municipality lies within any urbanized area within the municipal boundaries.

Elizabeth Township is currently considered an MS4 Permittee which is administered and managed by the PADEP. Through this permit the Township is required to develop a stormwater management plan that informs the general public, residents, businesses, employees, etc. how to manage stormwater and avoid pollutants from entering our streams such as sediment, metals, fecals, oils and grease, fertilizers, garbage, and more while complying with the MS4 permit requirements.

Last Revised on 8/31/23

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