A picture of a Sea Otter struggling with a bag that was left in the water.

Municipal Separate Storm Water Sewer Systems

Rebecca S. Parkhill, guest writer What is an MS4 Permit? Municipal separate storm sewer system (MS4) is defined as a conveyance or system of conveyances otherwise known as a municipal separate storm sewer system, including roads with drainage systems, municipal streets, catch basins, curbs, gutters, ditches, manmade channels, or storm drains. Discharges from municipal separate storm sewer […]

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