The WEF Stormwater Institute has completed two iterations of the National Municipal Separate Storm Sewer System (MS4) Needs Assessment Survey – the first in 2018 and the second in 2020. The primary objectives of these surveys are
- to better understand MS4 program challenges,
- to identify the information and resource needs of MS4 permittees, and
- to approximate current funding levels and estimated funding needs in the MS4 sector.
To view the Results Report, Data Dashboard, and Report Appendices, visit the MS4 Survey website.