eau et assainissement – Stations d'épuration par lagunage dans le ZAN

This written question concerns wastewater treatment plants using lagooning systems in France, specifically within the framework of the 'Zéro Artificialisation Nette' (ZAN) policy. It seeks clarification on the environmental and planning implications of these systems. The question addresses local authorities, environmental agencies, and citizens concerned with water quality, land use, and sustainable development practices in rural and peri-urban areas.