Planted gravel beds that treat wastewater from condominiums, institutions and neighbourhoods with little or no energy, run by the community together with the water utility.
Government condominium estates were built with septic tanks but no sewer and no outlet. As the tanks filled, sewage surfaced between the blocks and backed up into ground-floor homes. In close collaboration with the local water utilities, our team delivered three constructed wetlands that give the tanks a safe outlet and treat the wastewater on site.
Commissioned in 2024 for the Dembela condominium estate, serving about 700 residents. Run by the community together with the Adama Water Utility, with treated water reused for toilet flushing and gardens.
Built with the Shashemene Water Utility for the Kebele 05 estate (2021, 134 residents) and the Kebele 04 estate (2022, 300 residents). Gravity-fed beds that treat wastewater without power or chemicals and have become green spaces between the blocks.