Celebrating Innovation and Leadership: 2025 MS4 Award Winners

The Municipal Separate Storm Sewer System (MS4) Awards recognize programs and communities that are setting new standards in stormwater management. Each year, the awards honor Phase I and Phase II MS4 permittees that demonstrate excellence in both innovation and program management. At WEFTEC 2025, six outstanding organizations were recognized for their leadership, creativity, and commitment to protecting water resources.

2025 MS4 Award Winners

MS4 Phase I Innovation and Program Management
Anne Arundel County, Maryland – Bureau of Watershed Protection and Restoration

MS4 Phase II Innovation and Program Management
City of Alexandria, Virginia

MS4 Phase I Innovation
Howard County Government, Maryland

MS4 Phase I Program Management
City of Dallas, Texas

MS4 Phase II Innovation
Detroit Water and Sewerage Department, Michigan

MS4 Phase II Program Management
City of Mount Vernon, Washington

Advancing Stormwater Excellence

This year’s winners highlight the diverse approaches communities are taking to meet the challenges of stormwater management. From large metropolitan areas to smaller cities, the honorees showcased how innovative practices, strong program management, and community engagement can drive measurable improvements in water quality and resilience.

By celebrating these achievements, the MS4 Awards continue to shine a spotlight on leaders who are advancing the profession and setting an example for stormwater programs across North America.