Treatment MeasuresInfiltration Trenches : Maintenance

To avoid clogging of the porous media, regular maintenance of infiltration trenches is crucial. Clogged media are cleaned by removing and washing the material and replacing the top fibre fabric layer.

Periodic inspections to detect early signs of clogging are also required. Surface ponding, water remaining in the trench for extended periods or sediment accumulation in the top layer are all early warnings of porous media clogging.