The Downstream Defender system uses the most advanced vortex separator available for the removal of the sediment, oil and flotables from stormwater runoff. It has proven to be more efficient than other structural treatment device. It has a smaller footprint and the capital cost is lower than other devices. It is proven to prevent washout and has low system headloss.


  • Control of sediment, flotable trash and petroleum products
  • New developments
  • Redevelopment projects
  • Streets, roadways and parking lots
  • Pretreatment for filters, infiltration or storage