Articles Tagged: MS4 Compliance

One of the greatest challenges facing municipalities with Municipal Separate Storm Sewer System (MS4) permits is getting the public to care about stormwater. Residents rarely think about catch basins, roadside ditches, detention ponds, or illicit discharges until flooding occurs or a nearby stream b…

When stormwater professionals encounter an unexplained discharge, a suspicious pipe, or a drainage system that does not behave as expected, one of the most effective investigative tools available is dye testing. Used by municipalities, engineers, environmental consultants, utility operators, and reg…

One of the greatest challenges facing municipal stormwater programs is finding meaningful ways to engage residents in protecting local waterways. Public education campaigns are important, but brochures, websites, and social media posts often struggle to create lasting behavioral change. People are f…

The Municipal Separate Storm Sewer System (MS4) program is one of the cornerstones of stormwater regulation in the United States. Established under the federal Clean Water Act and administered through the National Pollutant Discharge Elimination System (NPDES), the MS4 program requires municipalitie…

Most storm drain inlets quietly collect and convey runoff without attracting much attention from the public. To many residents, a storm drain is simply another opening in the curb or grate in the pavement. What many people do not realize, however, is that storm drains in most municipalities discharg…

Street sweeping rarely gets much attention. It is slow, repetitive work, often done in the early morning hours, and the equipment itself can be temperamental and expensive to maintain. Sweepers are subject to constant wear, from abrasive debris, dust, and the mechanical strain of brushes, conveyors,…

As communities look for sustainable ways to manage stormwater, bioswales have become one of the most effective and visually appealing tools in the green infrastructure toolbox. They blend natural processes with engineered design to slow, filter, and infiltrate stormwater before it reaches local wate…

Municipal Separate Storm Sewer System, or MS4, compliance is built on documentation. Whether you are demonstrating outfall inspections, tracking illicit discharge investigations, or verifying maintenance activities, a well-organized photo-log can be one of the most effective and defensible tools in …

Fire hydrant flushing is a common and often necessary practice for maintaining water distribution systems. Municipalities flush hydrants to remove sediment, verify system performance, and ensure adequate flow for firefighting. While these objectives are important, the practice can carry a range of u…

Municipal Separate Storm Sewer System programs, commonly referred to as MS4 programs, are often viewed as regulatory obligations, while stormwater asset management is treated as an operational necessity. In reality, these two efforts are deeply interconnected. When properly aligned, a strong asset m…

Managing outfalls as assets rather than afterthoughts represents a fundamental shift in how municipalities approach stormwater infrastructure. For many communities, outfalls are only addressed when something goes wrong, such as erosion, structural failure, or a visible discharge issue. By that point…

Stormwater asset management is one of those concepts that sounds technical and abstract, yet at its core it is simply about knowing what you own, understanding its condition, and making informed decisions before problems turn into emergencies. For municipalities responsible for miles of pipe, hundre…