Here are a few examples of SUDs techniques which effectively slow down and treat runoff water.

• Permeable surfaces – specially designed block work which allows passage of water through its surface to storage or soakaway.
  
  
• Filter strips – Strips of grass bordering which are designed to receive water from hard-standings.  The strips remove sediment and pollution from runoff water.
  
  
• Swales – Shallow sided ditches which are planted with grass.  Designed to slow the passage of water.
  
  
• Bioretention areas – short term water storage areas, often planted with shrubs and trees.
  
  
• Sedimentation ponds and basins – Longer term storage of runoff.