Janisch & Schulz is participating in the DWA Climate Award with a constructed wetland at the “Little Franklin” nature kindergarten in Mannheim. The system naturally treats wastewater on-site, avoiding discharge into the public sewer. The purified water infiltrates locally, creating wetland habitats that enhance biodiversity and serve as green, cooling areas. This project demonstrates how nature-based wastewater treatment can support climate adaptation in urban environments. The award winners will be announced at the DWA “Water Days” in Berlin in September.

At J&S Engineers, we know how to purify wastewater and we have successfully been doing that for more than 30 years now. Starting off with small and medium-scale solutions, today we lead international projects for large-scale systems, treating wastewater for up to 25.000 people. Our design know-how includes complete multi-stage treatment plants, applying nature-based solutions as the core technology.

The J&S Wetland Roofs system represents a significant advancement in the purification of wastewater on green roofs, simultaneously offering passive cooling effects in buildings.

In Paraguay’s legislative landscape, our engineers at Janisch & Schulz proudly contributed to a UN-funded infrastructure project, focusing on wastewater treatment solutions that seamlessly blend with intelligent architecture.