Ryan Hanley for Coolatee Integrated Constructed Wetland.  Using a nature nature-based solution this project successfully removed an untreated discharge to the Foyle estuary, without the need for an energy supply or any treated water connection while also contributing to increased biodiversity in the area. In providing tertiary level of treatment using 4 wetland ponds the project overcame the challenges of confined area, limited hydraulic headroom, and high groundwater to produce a sustainable solution.