MS4

Municipal separate storm sewer system" is specifically defined in the federal rules (Title 40 Code of Federal Regulations Part 122.2 ).

First, "separate storm sewer system" includes ditches, curbs, gutters, storm sewers, and similar means of collecting or conveying runoff that do not connect with a wastewater collection system or treatment plant. To be a "municipal separate storm sewer system" (MS4), the system must be owned or operated by a public agency—for example: a city or town; a municipal utility district, flood control district, or other special districta county; or a state or federal agency.

Below is a copy of the watershed map for the Lakes Area Conservancy District.

For additional information, please contact the Indiana Department of Environmental Management or the City of Valparaiso Stormwater website should you have any additional information.

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