We provide advanced products to help people to improve their water management processes, increase operational performance and reduce environmental impact.
Capture and retain sediment, oils and floatables from stormwater runoff over a wide…
View ProductWe provide data, expertise and support to help our customers understand complex water management issues, and to design, install, operate and maintain effective water management systems.
Make better water management decisions with specialist hydrometry, flood risk management…
View ServiceLearn about how our range of precision-engineered Hydro-Brake® flow controls can help…
View ResourceWe help people improve the way they process, treat and manage water.Who we are and what…
View PageSize your Downstream Defender® and First Defense® stormwater separators online.
Log in to the US-specific sizing tool: US Stormwater Separator Sizing Tool
Log in to the Canada-specific sizing tool: Canada Stormwater Separator Sizing Tool
Click the Download button below to view the user guide.