Solutions in this category aim at reducing the effects of heavy rains and floods. Sustainable drainage systems help to manage and treat surface water runoff. These include rain gardens and water retention ponds. The main goal is to reduce flood risk and store rainwater. In some cases, water can be cleaned via biofiltering before being released back to the environment. Flood actions include the installation of floodable parks and rain gardens, the design of tree pits and interventions such as culvert work and riverbank restorations. The goal is to reduce flood risks and improve water quality. Water treatment consists of the installation of a green filter zone and a natural wastewater treatment plant. This will take wastewater from citizens and convert it into water suitable for irrigation purposes. Finally, the substitution of asphalt pavements by green pavements, which contain small gaps filled with smart soils and specific grass species, will reduce temperatures and increase drainage capacity.