Articles Tagged: Illicit Discharges

Stormwater runoff can cause fish kills through a combination of physical, chemical, and biological mechanisms that alter aquatic environments beyond the tolerance limits of fish and other aquatic organisms. These impacts are often rapid, episodic, and closely tied to precipitation events, especially…

Closed-circuit television, or CCTV, drainage inspection has become one of the most effective tools available to municipalities for understanding the true condition of their buried stormwater infrastructure. Unlike surface inspections, which can only reveal limited information, CCTV inspections provi…

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…

Understanding Natural vs. Problematic Foam in Streams, Channels, and Lakes If you spend enough time around streams, roadside ditches, or lakes, you will eventually notice patches of foam collecting along the edges or drifting in slow-moving water. For many people, the immediate assumption is that th…

Municipal governments are often viewed as stewards of water quality, yet many of their routine, necessary operations can unintentionally contribute pollutants to the stormwater system. Unlike wastewater, which is treated before discharge, stormwater typically flows untreated into nearby streams, riv…

Dry weather outfall screening is one of the most effective and defensible tools available to municipal stormwater programs for identifying illicit discharges. Under MS4 permit requirements associated with the Clean Water Act and the NPDES stormwater program, municipalities are required to implement …

Lake George in upstate New York is often called the “Queen of American Lakes” because of its exceptional clarity and scenic setting in the Adirondack Mountains. For generations, residents and visitors have prized its transparent waters, vibrant fisheries, and tourism economy. Yet in rece…

When crews encounter contaminated sediments during routine work, or when a concerned homeowner reports a suspicious odor or unusual discharge, the situation calls for immediate but steady action. Stormwater systems often collect materials from a wide range of sources, and although many sediments are…

Wetlands are often described as the kidneys of the watershed because they filter, slow, and transform the water that passes through them in ways that protect downstream ecosystems. This comparison is more than a poetic metaphor. It captures the essential truth that wetlands perform quiet but powerfu…

Field inspections of catch basins, manholes, culverts, and outfalls form the foundation of responsible stormwater management. These routine checks give municipalities an ongoing view of the condition of their drainage network and allow crews to identify issues long before they become flooding hazard…

Habitat disruption around drainage structures is often subtle at first, and many of the earliest signs tend to appear during ordinary field work rather than during formal environmental surveys. Because highway departments and public works crews encounter these locations regularly, they are in the be…

The Salton Sea is one of California’s most unusual and tragic landscapes, a place shaped by accident, transformed by ambition, and ultimately pushed toward collapse by the very forces that sustained it for decades. Its story is a long arc of creation, prosperity, decline, and ongoing struggle,…