Key highlights:
✅NbS improve water quality, biodiversity and flood resilience by improving water quality through sedimentation, nutrient uptake, and microbial processes; they restore ecological connectivity to support biodiversity; and they increase flood resilience by integrating retention basins, infiltration zones, and controlled discharge systems that mimic natural hydrology while reducing peak flow and urban runoff.
✅LCA shows green solutions can be sustainable with grass trenches emitting the least CO₂, while traditional PVC pipes have the highest footprint. Even green trenches with filter soil score top marks on multifunctionality and co-benefits like water purification and groundwater management.
✅Strong collaboration between research, municipality and water management company creates a cross-sectoral approach for local knowledge and technical expertise to meet.
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