The Stormwater Blog

This article explains why underground detention systems need pretreatment to stay effective over time, and how hydrodynamic separators protect storage volume by removing sediment, trash, and floatables before they enter the system. It highlights how proper HDS sizing can extend maintenance intervals, reduce cleaning costs, and preserve hydraulic performance, making pretreatment one of the most cost-effective ways to protect underground stormwater infrastructure.

Stormwater management is a critical aspect of sustainable urban development, and hydrodynamic separators (HDS) play a vital role in this process. In this blog post, we delve into the intricacies of HDS devices, looking at the different components, each serving a specific purpose in removing and retaining stormwater pollutants while adhering to hydraulic requirements.