Johkasou Green Rwanda Ltd Johkasou Green Rwanda Ltd Innovative Decentralized Wastewater Solutions for Africa’s Urban Future Who We Are Johkasou Green Rwanda Ltd is a woman-led social enterprise deploying modular Japanese Johkasou wastewater treatment technology to close the sanitation gap in Rwanda and East Africa. We serve communities where conventional sewer systems are unaffordable, unscalable, or geographically impractical. The Challenge 80%+ of urban wastewater in Rwanda goes untreated Centralized systems are too expensive and slow to deploy Informal and peri-urban settlements lack safe, scalable sanitation Women and children face disproportionate health and safety risks 💡 Our Solution: Johkasou Technology Compact, decentralized WWTPs (modular + terrain-resilient) Treat blackwater and greywater with >90% BOD/COD efficiency Quick install (24–48 hours), low energy use, minimal O&M Fully compliant with REMA and RURA standards Reusable treated water for irrigation or flushing 📈 Track Rec Sectors Sanitation, Water treatment, Water, sanitation and hygiene Location Kigali, Rwanda Stage Sign in to view details Markets Sign in to view details Customer model Sign in to view details Revenue Sign in to view details Contact Sign in to view details Social media