Geosynthetics can act as a filter by allowing water to move freely through while preventing the migration of fine particles. Often used to prevent soils from migrating into drainage aggregate or pipes while maintaining flow. Can also prevent soil erosion in coastal and riverbanks when used below loose stones or rocks and other material.

Catch drain warden geotextiles can be used in various settings to help protect the environment and ensure the proper functioning of drainage systems. They can be used to:

A catch drain warden is a specialised geotextile used in stormwater management systems to prevent debris, sediment and pollutants from entering drainage systems. It is designed to protect catch basins, ensuring that only clean water is discharged from the environment.

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The use of a geosynthetic to prevent soil or other particle movements on the surface slope. Acts to reduce soil erosion caused by wind forces, rainfall impact and surface water runoff. The use of geosynthetics in erosion control is to maintain soil cover either as a temporary measure offering protection from soil loss whilst vegetation is established or as a permanent control measure, typically on steeper slopes or high-water velocity situations.