Description
Did you know that the filtering basins are a water filtration structure at the outlet of the Grimonpont wastewater treatment plant? But it's also a formidable biodiversity reserve, home to a thousand and one species?
Come and discover this site with its thousand and one facets.
**Meeting point**: 2:30 pm
**Starting point**: allée des pêcheurs ? entrance to the site in Leers
**Public**: all
**Good to know** : reservation required on 03 20 63 11 23 or [relaiscanal@lillemetropole.fr](mailto:relaiscanal@lillemetropole.fr)
**Price** : free of charge
